{"id":810,"date":"2026-11-12T09:08:55","date_gmt":"2026-11-12T01:08:55","guid":{"rendered":"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-5995cae0d2b757251ec8c3e81347df7a8d91c0c3fe165e7aa02ea9d7af9f0e3b\/"},"modified":"2026-11-12T09:08:55","modified_gmt":"2026-11-12T01:08:55","slug":"pulsemate-security-5995cae0d2b757251ec8c3e81347df7a8d91c0c3fe165e7aa02ea9d7af9f0e3b","status":"publish","type":"post","link":"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-5995cae0d2b757251ec8c3e81347df7a8d91c0c3fe165e7aa02ea9d7af9f0e3b\/","title":{"rendered":"WP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u6df1\u5ea6\u5256\u6790\uff1aCVE-2026-118423 \u672a\u9274\u6743 RCE \u653b\u51fb\u94fe\u4e0e\u5e94\u6025\u52a0\u56fa\u5b9e\u6218"},"content":{"rendered":"<div class=\"doc-spec-grid\">\n<div class=\"doc-spec-item\"><span class=\"doc-spec-label\">\ud83c\udfaf \u6838\u5fc3\u6280\u672f<\/span><span class=\"doc-spec-value\">WordPress \u63d2\u4ef6 \/ \u6587\u4ef6\u4e0a\u4f20\u6821\u9a8c<\/span><\/div>\n<div class=\"doc-spec-item\"><span class=\"doc-spec-label\">\u26a1 \u67b6\u6784\u96be\u5ea6<\/span><span class=\"doc-spec-value\">\u8d44\u6df1\u67b6\u6784\u7ea7 (Level 3-4)<\/span><\/div>\n<div class=\"doc-spec-item\"><span class=\"doc-spec-label\">\ud83d\ude80 \u6838\u5fc3\u6536\u76ca<\/span><span class=\"doc-spec-value\">30 \u5206\u949f\u5185\u5b8c\u6210\u98ce\u9669\u6536\u655b \/ \u963b\u65ad\u672a\u6388\u6743 RCE<\/span><\/div>\n<\/div>\n<blockquote class=\"doc-lead\"><p><strong>\u5bfc\u8bed\uff1a<\/strong>WP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\uff08CVE-2026-118423\uff09\u662f\u8fd1\u671f WordPress \u751f\u6001\u4e2d\u98ce\u9669\u7b49\u7ea7\u6781\u9ad8\u7684\u4e00\u7c7b\u672a\u6388\u6743\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u7f3a\u9677\u2014\u2014\u63d2\u4ef6 1.5.0.1 \u7248\u672c\u5bf9\u8868\u5355\u63d0\u4ea4\u7684\u6587\u4ef6\u7c7b\u578b\u5b8c\u5168\u4e0d\u505a\u6821\u9a8c\uff0c\u653b\u51fb\u8005\u65e0\u9700\u4efb\u4f55\u8d26\u53f7\u5373\u53ef\u5c06 PHP \u6587\u4ef6\u6295\u9012\u5230 Web \u53ef\u8bbf\u95ee\u76ee\u5f55\u5e76\u76f4\u63a5\u89e6\u53d1\u6267\u884c\u3002\u672c\u6587\u4ee5\u4e00\u7ebf\u5e94\u6025\u54cd\u5e94\u89c6\u89d2\uff0c\u5b8c\u6574\u62c6\u89e3\u653b\u51fb\u94fe\u3001\u7ed9\u51fa WAF \u865a\u62df\u8865\u4e01\u4e0e\u4ee3\u7801\u7ea7\u4fee\u590d\u53cc\u8f68\u65b9\u6848\uff0c\u5e76\u9644\u4e0a\u751f\u4ea7\u73af\u5883\u9a8c\u8bc1\u6e05\u5355\u3002<\/p><\/blockquote>\n<div class=\"doc-arch-card\">\n<div class=\"doc-arch-header\">\n<div class=\"doc-arch-title-wrap\">\n      <span class=\"doc-arch-title\"><span class=\"icon\">\ud83d\udcd0<\/span> WP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u653b\u51fb\u94fe\u4e0e\u7eb5\u6df1\u9632\u5fa1\u5168\u666f<\/span><br \/>\n      <span class=\"doc-arch-badge\">\u4f01\u4e1a\u7ea7\u67b6\u6784\u89c4\u8303<\/span>\n    <\/div>\n<div class=\"doc-arch-actions\">\n      <button type=\"button\" class=\"doc-arch-btn btn-copy-raw\">\ud83d\udccb \u590d\u5236\u6e90\u7801<\/button><br \/>\n      <button type=\"button\" class=\"doc-arch-btn btn-zoom-arch\">\ud83d\udd0d \u653e\u5927\u67e5\u770b<\/button>\n    <\/div>\n<\/p><\/div>\n<pre class=\"mermaid\">\nflowchart TD\n    subgraph \u653b\u51fb\u9762 [\"\u5916\u90e8\u653b\u51fb\u9762 (Untrusted Input Tier)\"]\n        A[\"\u672a\u6388\u6743\u653b\u51fb\u8005 (Anonymous Attacker)\"] --&gt; B[\"POST \u8868\u5355\u63d0\u4ea4 multipart\/form-data\"]\n    end\n    subgraph \u63a5\u5165\u5c42 [\"Web \u63a5\u5165\u4e0e\u63d2\u4ef6\u5165\u53e3 (Gateway &amp; Plugin Tier)\"]\n        B --&gt; C[\"Nginx \/ Apache \u63a5\u6536\u8bf7\u6c42\"]\n        C --&gt; D[\"WP Libre Form \u8868\u5355\u5904\u7406\u94a9\u5b50 (\u65e0\u7c7b\u578b\u6821\u9a8c)\"]\n    end\n    subgraph \u843d\u76d8\u5c42 [\"\u6587\u4ef6\u843d\u76d8\u4e0e\u6267\u884c (Storage &amp; Execution Tier)\"]\n        D --&gt; E[\"\u6587\u4ef6\u5199\u5165 wp-content\/uploads \u53ef\u8bbf\u95ee\u76ee\u5f55\"]\n        E --&gt; F[\"\u653b\u51fb\u8005\u8bf7\u6c42 .php \u6587\u4ef6\u89e6\u53d1 PHP-FPM \u6267\u884c\"]\n    end\n    subgraph \u9632\u5fa1\u5c42 [\"\u7eb5\u6df1\u9632\u5fa1\u4e0e\u5e94\u6025\u54cd\u5e94 (Defense &amp; Response Tier)\"]\n        G[\"WAF \u865a\u62df\u8865\u4e01 (\u62e6\u622a .php \u4e0a\u4f20)\"] -.-&gt; C\n        H[\"\u4e0a\u4f20\u76ee\u5f55\u7981\u6b62\u811a\u672c\u6267\u884c (Nginx location)\"] -.-&gt; E\n        I[\"\u63d2\u4ef6\u4ee3\u7801\u7ea7\u767d\u540d\u5355\u6821\u9a8c\u4fee\u590d\"] -.-&gt; D\n    end\n    F --&gt; J[\"\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c (RCE) \u98ce\u9669\"]\n       <\/pre>\n<div class=\"doc-arch-caption\">\u56fe 1: WP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u4ece\u533f\u540d\u8868\u5355\u63d0\u4ea4\u5230 PHP \u6267\u884c\u7684\u5168\u94fe\u8def\uff0c\u4ee5\u53ca WAF\u3001\u76ee\u5f55\u52a0\u56fa\u4e0e\u4ee3\u7801\u4fee\u590d\u4e09\u5c42\u9632\u5fa1\u843d\u70b9\u3002<\/div>\n<\/div>\n<h2 class=\"doc-h2\">\u4e00\u3001\u6f0f\u6d1e\u753b\u50cf\uff1aWP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u5230\u5e95\u5371\u9669\u5728\u54ea<\/h2>\n<p class=\"doc-p\">\u4ece NVD \u7684\u539f\u59cb\u63cf\u8ff0\u770b\uff0c\u95ee\u9898\u975e\u5e38\u76f4\u767d\uff1a<strong>WP Libre Form 1.5.0.1 \u5728\u5904\u7406\u8868\u5355\u63d0\u4ea4\u65f6\uff0c\u6ca1\u6709\u6821\u9a8c\u4e0a\u4f20\u6587\u4ef6\u7684\u7c7b\u578b<\/strong>\uff0c\u5bfc\u81f4\u672a\u8ba4\u8bc1\u653b\u51fb\u8005\u53ef\u4ee5\u628a PHP \u6587\u4ef6\u4e0a\u4f20\u5230 Web \u53ef\u8bbf\u95ee\u8def\u5f84\u5e76\u6267\u884c\uff0c\u6700\u7ec8\u5f62\u6210\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\uff08RCE\uff09\u3002\u5728 WordPress \u63d2\u4ef6\u6f0f\u6d1e\u8c31\u7cfb\u91cc\uff0c\u8fd9\u5c5e\u4e8e\u201c\u672a\u6388\u6743 + \u6587\u4ef6\u4e0a\u4f20 + \u53ef\u6267\u884c\u76ee\u5f55\u201d\u4e09\u8981\u7d20\u9f50\u5907\u7684\u6700\u574f\u7ec4\u5408\u3002<\/p>\n<p class=\"doc-p\">\u4f5c\u4e3a\u67b6\u6784\u5e08\uff0c\u6211\u66f4\u5173\u6ce8\u5b83\u4e3a\u4ec0\u4e48\u80fd\u6210\u7acb\u3002WordPress \u63d2\u4ef6\u751f\u6001\u957f\u671f\u5b58\u5728\u4e00\u4e2a\u7ed3\u6784\u6027\u9690\u60a3\uff1a\u8868\u5355\u7c7b\u63d2\u4ef6\u4e3a\u4e86\u201c\u901a\u7528\u6027\u201d\uff0c\u5f80\u5f80\u628a\u4e0a\u4f20\u6587\u4ef6\u76f4\u63a5\u843d\u5230 <code>wp-content\/uploads\/<\/code> \u4e0b\uff0c\u800c\u8be5\u76ee\u5f55\u9ed8\u8ba4\u5c31\u662f Web \u53ef\u8bbf\u95ee\u7684\u3002\u53ea\u8981\u63d2\u4ef6\u6ca1\u6709\u505a\u6269\u5c55\u540d\u767d\u540d\u5355\u3001MIME \u6821\u9a8c\u4e0e\u6587\u4ef6\u540d\u968f\u673a\u5316\uff0c\u653b\u51fb\u8005\u5c31\u80fd\u628a <code>shell.php<\/code> \u4f2a\u88c5\u6210\u4efb\u610f\u8868\u5355\u9644\u4ef6\u6295\u9012\u8fdb\u6765\u3002<\/p>\n<ul class=\"doc-list\">\n<li><strong>\u653b\u51fb\u524d\u63d0\uff1a<\/strong>\u76ee\u6807\u7ad9\u70b9\u542f\u7528 WP Libre Form 1.5.0.1\uff0c\u4e14\u5b58\u5728\u53ef\u63d0\u4ea4\u7684\u8868\u5355\u9875\u9762\uff08\u7edd\u5927\u591a\u6570\u7ad9\u70b9\u90fd\u6709\u8054\u7cfb\u8868\u5355\uff09\u3002<\/li>\n<li><strong>\u9274\u6743\u8981\u6c42\uff1a<\/strong>\u65e0\u3002\u8fd9\u662f\u672c\u6f0f\u6d1e\u6700\u81f4\u547d\u7684\u5730\u65b9\u2014\u2014\u653b\u51fb\u8005\u4e0d\u9700\u8981\u767b\u5f55\u540e\u53f0\uff0c\u4e5f\u4e0d\u9700\u8981\u4efb\u4f55\u6709\u6548\u8d26\u53f7\u3002<\/li>\n<li><strong>\u5229\u7528\u7ed3\u679c\uff1a<\/strong>\u4e0a\u4f20\u7684 PHP \u6587\u4ef6\u88ab Web \u670d\u52a1\u5668\u89e3\u6790\u6267\u884c\uff0c\u653b\u51fb\u8005\u53ef\u8fdb\u4e00\u6b65\u5199\u5165\u6301\u4e45\u5316\u540e\u95e8\u3001\u7a83\u53d6\u6570\u636e\u5e93\u51ed\u636e\u3001\u6a2a\u5411\u79fb\u52a8\u3002<\/li>\n<li><strong>\u68c0\u6d4b\u96be\u5ea6\uff1a<\/strong>\u4e0a\u4f20\u8bf7\u6c42\u5728\u8bbf\u95ee\u65e5\u5fd7\u4e2d\u4e0e\u6b63\u5e38\u8868\u5355\u63d0\u4ea4\u9ad8\u5ea6\u76f8\u4f3c\uff0c\u4ec5\u9760\u4eba\u5de5\u7ffb\u65e5\u5fd7\u5f88\u96be\u53d1\u73b0\u3002<\/li>\n<\/ul>\n<div class=\"doc-callout doc-callout-danger\">\n<div class=\"doc-callout-title\">\ud83d\udea8 \u4e25\u91cd\u9690\u60a3\u544a\u8b66<\/div>\n<p>\u82e5\u4f60\u7684\u7ad9\u70b9\u540c\u65f6\u6ee1\u8db3\u201c\u63d2\u4ef6\u7248\u672c\u4e3a 1.5.0.1\u201d\u4e0e\u201cuploads \u76ee\u5f55\u5141\u8bb8\u6267\u884c PHP\u201d\u4e24\u4e2a\u6761\u4ef6\uff0c\u8bf7\u7acb\u5373\u6309\u672c\u6587\u7b2c\u4e09\u7ae0\u6267\u884c\u4e34\u65f6\u5c01\u5835\uff0c\u4e0d\u8981\u7b49\u5f85\u63d2\u4ef6\u5b98\u65b9\u8865\u4e01\u3002\u672a\u6388\u6743 RCE \u7684\u5229\u7528\u95e8\u69db\u6781\u4f4e\uff0c\u516c\u5f00 PoC \u51fa\u73b0\u540e\u901a\u5e38\u6570\u5c0f\u65f6\u5185\u5373\u88ab\u6279\u91cf\u626b\u63cf\u3002<\/p><\/div>\n<h2 class=\"doc-h2\">\u4e8c\u3001\u653b\u51fb\u94fe\u62c6\u89e3\uff1a\u4ece\u4e00\u6b21\u533f\u540d\u8868\u5355\u63d0\u4ea4\u5230 PHP \u6267\u884c<\/h2>\n<h3 class=\"doc-h3\">2.1 \u653b\u51fb\u8005\u89c6\u89d2\u7684\u56db\u6b65\u5229\u7528\u8def\u5f84<\/h3>\n<p class=\"doc-p\">\u628a\u653b\u51fb\u94fe\u62c6\u5f00\u770b\uff0cWP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u7684\u5229\u7528\u8def\u5f84\u53ef\u4ee5\u62bd\u8c61\u4e3a\u56db\u6b65\uff0c\u6bcf\u4e00\u6b65\u90fd\u5bf9\u5e94\u4e00\u4e2a\u53ef\u52a0\u56fa\u7684\u62e6\u622a\u70b9\uff1a<\/p>\n<ul class=\"doc-list\">\n<li><strong>\u7b2c\u4e00\u6b65 \u00b7 \u4fa6\u5bdf\uff1a<\/strong>\u626b\u63cf\u7ad9\u70b9\u662f\u5426\u5b58\u5728 WP Libre Form \u8868\u5355\u9875\u9762\uff0c\u8bc6\u522b\u8868\u5355\u7684 <code>action<\/code> \u4e0e\u5b57\u6bb5\u540d\u3002<\/li>\n<li><strong>\u7b2c\u4e8c\u6b65 \u00b7 \u6784\u9020\uff1a<\/strong>\u6784\u9020 <code>multipart\/form-data<\/code> \u8bf7\u6c42\uff0c\u5c06 PHP \u4ee3\u7801\u5199\u5165\u6587\u4ef6\u5185\u5bb9\uff0c<code>Content-Type<\/code> \u4f2a\u88c5\u4e3a <code>image\/jpeg<\/code>\u3002<\/li>\n<li><strong>\u7b2c\u4e09\u6b65 \u00b7 \u843d\u76d8\uff1a<\/strong>\u63d2\u4ef6\u5c06\u6587\u4ef6\u539f\u6837\u5199\u5165 uploads \u76ee\u5f55\uff0c\u8fd4\u56de\u53ef\u8bbf\u95ee URL\u3002<\/li>\n<li><strong>\u7b2c\u56db\u6b65 \u00b7 \u89e6\u53d1\uff1a<\/strong>\u653b\u51fb\u8005\u76f4\u63a5 GET \u8be5 URL\uff0cPHP-FPM \u89e3\u6790\u6267\u884c\uff0cRCE \u8fbe\u6210\u3002<\/li>\n<\/ul>\n<h3 class=\"doc-h3\">2.2 \u4e3a\u4ec0\u4e48\u201c\u53ea\u6821\u9a8c\u524d\u7aef\u201d\u6beb\u65e0\u610f\u4e49<\/h3>\n<p class=\"doc-p\">\u5f88\u591a\u8868\u5355\u63d2\u4ef6\u5728\u524d\u7aef\u7528 <code>accept=\"image\/*\"<\/code> \u505a\u9650\u5236\uff0c\u8fd9\u53ea\u80fd\u62e6\u4f4f\u666e\u901a\u7528\u6237\uff0c\u62e6\u4e0d\u4f4f\u4efb\u4f55\u4f7f\u7528 curl \u6216 Burp \u7684\u653b\u51fb\u8005\u3002\u670d\u52a1\u7aef\u5fc5\u987b\u72ec\u7acb\u5b8c\u6210\u4e09\u91cd\u6821\u9a8c\uff1a\u6269\u5c55\u540d\u767d\u540d\u5355\u3001\u771f\u5b9e MIME \u63a2\u6d4b\uff08<code>finfo_file<\/code>\uff09\u3001\u4ee5\u53ca\u6587\u4ef6\u5185\u5bb9\u9b54\u6570\u6bd4\u5bf9\u3002\u7f3a\u4efb\u4f55\u4e00\u5c42\uff0cWP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u8fd9\u7c7b\u95ee\u9898\u5c31\u4f1a\u590d\u73b0\u3002<\/p>\n<div class=\"doc-callout doc-callout-info\">\n<div class=\"doc-callout-title\">\ud83d\udca1 \u67b6\u6784\u6838\u5fc3\u51b3\u7b56<\/div>\n<p>\u6587\u4ef6\u4e0a\u4f20\u7684\u5b89\u5168\u8fb9\u754c\u4e0d\u5e94\u7531\u4e1a\u52a1\u63d2\u4ef6\u5355\u72ec\u627f\u62c5\u3002\u6b63\u786e\u7684\u67b6\u6784\u662f\u628a\u201c\u4e0a\u4f20\u843d\u76d8\u201d\u4e0e\u201cWeb \u53ef\u8bbf\u95ee\u201d\u89e3\u8026\uff1a\u4e0a\u4f20\u6587\u4ef6\u5148\u8fdb\u5165\u975e Web \u6839\u76ee\u5f55\u7684\u9694\u79bb\u533a\uff0c\u7ecf\u6821\u9a8c\u3001\u91cd\u547d\u540d\u3001\u7c7b\u578b\u8f6c\u6362\u540e\u518d\u7531\u53d7\u63a7\u7684\u4e0b\u8f7d\u63a5\u53e3\u5bf9\u5916\u63d0\u4f9b\u3002\u8fd9\u4e00\u5c42\u8bbe\u8ba1\u53ef\u4ee5\u4e00\u6b21\u6027\u514d\u75ab\u7edd\u5927\u591a\u6570\u4e0a\u4f20\u7c7b CVE\u3002<\/p><\/div>\n<h2 class=\"doc-h2\">\u4e09\u3001\u5e94\u6025\u54cd\u5e94\uff1a30 \u5206\u949f\u5185\u5b8c\u6210 WP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u98ce\u9669\u6536\u655b<\/h2>\n<h3 class=\"doc-h3\">3.1 \u7b2c\u4e00\u4f18\u5148\u7ea7\uff1a\u5c01\u5835\u4e0a\u4f20\u76ee\u5f55\u7684\u811a\u672c\u6267\u884c<\/h3>\n<p class=\"doc-p\">\u5728\u62ff\u5230\u5b98\u65b9\u8865\u4e01\u4e4b\u524d\uff0c\u6700\u5feb\u3001\u6700\u6709\u6548\u7684\u6b62\u8840\u624b\u6bb5\u662f\u8ba9 uploads \u76ee\u5f55\u201c\u5373\u4f7f\u88ab\u4e0a\u4f20 PHP \u4e5f\u65e0\u6cd5\u6267\u884c\u201d\u3002Nginx \u4e0e Apache \u7684\u914d\u7f6e\u5206\u522b\u5982\u4e0b\uff0c\u5efa\u8bae\u76f4\u63a5\u843d\u5230\u7ad9\u70b9\u7ea7\u914d\u7f6e\u4e2d\u5e76 reload\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-title=\"nginx-uploads-hardening.conf\"># \u7981\u6b62 wp-content\/uploads \u4e0b\u6267\u884c\u4efb\u4f55\u811a\u672c\nlocation ~* ^\/wp-content\/uploads\/.*.(php|php5|php7|phtml|phar)$ {\n    deny all;\n    return 403;\n}\n\n# \u515c\u5e95\uff1auploads \u76ee\u5f55\u5185\u4e0d\u8f6c\u53d1\u7ed9 PHP-FPM\nlocation ^~ \/wp-content\/uploads\/ {\n    location ~* .(php|phtml|phar)$ {\n        deny all;\n    }\n    try_files $uri $uri\/ =404;\n}\n<\/pre>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-title=\"apache-uploads-hardening.conf\"># \u5728 uploads \u76ee\u5f55\u653e\u7f6e .htaccess\uff0c\u7981\u6b62\u811a\u672c\u89e3\u6790\n&lt;FilesMatch \".(php|php5|php7|phtml|phar)$\"&gt;\n    Require all denied\n&lt;\/FilesMatch&gt;\n\n# \u540c\u65f6\u5173\u95ed\u8be5\u76ee\u5f55\u7684 Options \u6267\u884c\u6743\u9650\nOptions -ExecCGI -Indexes\n<\/pre>\n<h3 class=\"doc-h3\">3.2 \u7b2c\u4e8c\u4f18\u5148\u7ea7\uff1aWAF \u865a\u62df\u8865\u4e01\u62e6\u622a\u6076\u610f\u4e0a\u4f20<\/h3>\n<p class=\"doc-p\">\u5728\u8fb9\u754c\u5c42\u589e\u52a0\u9488\u5bf9 WP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u7684\u865a\u62df\u8865\u4e01\u89c4\u5219\uff0c\u91cd\u70b9\u62e6\u622a\u201c\u8868\u5355\u63d0\u4ea4\u4e2d\u643a\u5e26\u53ef\u6267\u884c\u811a\u672c\u6269\u5c55\u540d\u201d\u7684\u8bf7\u6c42\u3002\u4ee5\u4e0b\u4e3a ModSecurity \u98ce\u683c\u89c4\u5219\u793a\u4f8b\uff0c\u53ef\u6309\u5b9e\u9645 WAF \u4ea7\u54c1\u8bed\u6cd5\u5fae\u8c03\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-title=\"modsecurity-wp-libre-form.conf\">SecRule REQUEST_METHOD \"@streq POST\" \n  \"chain,phase:2,deny,status:403,id:100118423,msg:'CVE-2026-118423 WP Libre Form arbitrary file upload'\"\n  SecRule REQUEST_URI \"@contains \/wp-admin\/admin-ajax.php\" \n  \"chain\"\n  SecRule FILES_NAMES \"(?i).(php|phtml|phar|php[0-9])$\" \n  \"t:urlDecodeUni,t:lowercase\"\n<\/pre>\n<div class=\"doc-callout doc-callout-warning\">\n<div class=\"doc-callout-title\">\u26a0\ufe0f \u751f\u4ea7\u907f\u5751\u98ce\u9669<\/div>\n<p>WAF \u89c4\u5219\u53ea\u662f\u4e89\u53d6\u65f6\u95f4\u7684\u865a\u62df\u8865\u4e01\uff0c\u4e0d\u80fd\u66ff\u4ee3\u4ee3\u7801\u4fee\u590d\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53cc\u6269\u5c55\u540d\uff08<code>shell.php.jpg<\/code>\uff09\u3001<code>.htaccess<\/code> \u8986\u76d6\u3001\u4ee5\u53ca\u5927\u5c0f\u5199\u6df7\u6dc6\u7ed5\u8fc7\u90e8\u5206\u89c4\u5219\u3002\u52a1\u5fc5\u540c\u6b65\u63a8\u8fdb 3.1 \u7684\u76ee\u5f55\u52a0\u56fa\u4e0e 3.3 \u7684\u63d2\u4ef6\u5904\u7f6e\u3002<\/div>\n<h3 class=\"doc-h3\">3.3 \u7b2c\u4e09\u4f18\u5148\u7ea7\uff1a\u63d2\u4ef6\u5904\u7f6e\u4e0e\u4ee3\u7801\u7ea7\u4fee\u590d<\/h3>\n<p class=\"doc-p\">\u82e5\u4e1a\u52a1\u5141\u8bb8\uff0c\u6700\u5f7b\u5e95\u7684\u505a\u6cd5\u662f\u505c\u7528\u5e76\u5220\u9664 WP Libre Form \u63d2\u4ef6\uff0c\u6539\u7528\u7ef4\u62a4\u6d3b\u8dc3\u7684\u8868\u5355\u65b9\u6848\u3002\u82e5\u5fc5\u987b\u4fdd\u7559\uff0c\u9700\u5728\u63d2\u4ef6\u4e0a\u4f20\u5904\u7406\u903b\u8f91\u4e2d\u8865\u4e0a\u767d\u540d\u5355\u6821\u9a8c\u3002\u6838\u5fc3\u4fee\u590d\u601d\u8def\u5982\u4e0b\uff08\u4ee5 PHP \u4e3a\u4f8b\uff09\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"php\" data-enlighter-title=\"secure-upload-handler.php\">$allowed = ['jpg' =&gt; 'image\/jpeg', 'png' =&gt; 'image\/png', 'pdf' =&gt; 'application\/pdf'];\n\n$name = $_FILES['file']['name'];\n$tmp  = $_FILES['file']['tmp_name'];\n$ext  = strtolower(pathinfo($name, PATHINFO_EXTENSION));\n\n\/\/ 1. \u6269\u5c55\u540d\u767d\u540d\u5355\nif (!array_key_exists($ext, $allowed)) {\n    wp_die('Invalid file type', 403);\n}\n\n\/\/ 2. \u771f\u5b9e MIME \u63a2\u6d4b\uff0c\u4e0d\u4fe1\u4efb\u5ba2\u6237\u7aef Content-Type\n$finfo = finfo_open(FILEINFO_MIME_TYPE);\n$mime  = finfo_file($finfo, $tmp);\nfinfo_close($finfo);\nif ($mime !== $allowed[$ext]) {\n    wp_die('MIME mismatch', 403);\n}\n\n\/\/ 3. \u968f\u673a\u5316\u6587\u4ef6\u540d\uff0c\u5265\u79bb\u539f\u59cb\u6269\u5c55\u540d\u8bed\u4e49\n$newName = wp_generate_uuid4() . '.' . $ext;\n$dest    = WP_CONTENT_DIR . '\/uploads\/secure\/' . $newName;\n\nif (!move_uploaded_file($tmp, $dest)) {\n    wp_die('Upload failed', 500);\n}\n<\/pre>\n<div class=\"baota-config-bar\"><span>upload_max_filesize = 2M<\/span><span class=\"lang-tag\">INI<\/span><\/div>\n<div class=\"baota-config-bar\"><span>file_uploads = On<\/span><span class=\"lang-tag\">INI<\/span><\/div>\n<div class=\"baota-config-bar\"><span>disable_functions = exec,passthru,shell_exec,system<\/span><span class=\"lang-tag\">INI<\/span><\/div>\n<details class=\"doc-accordion\">\n<summary>\u70b9\u51fb\u5c55\u5f00\uff1a\u6279\u91cf\u6392\u67e5\u53d7\u5f71\u54cd\u7ad9\u70b9\u4e0e\u540e\u95e8\u6587\u4ef6\u7684\u547d\u4ee4<\/summary>\n<div class=\"doc-accordion-content\">\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-title=\"incident-response.sh\"># 1. \u67e5\u627e uploads \u4e0b\u8fd1\u671f\u65b0\u589e\u7684\u53ef\u7591\u811a\u672c\u6587\u4ef6\nfind \/var\/www\/html\/wp-content\/uploads -type f \n  ( -iname \"*.php\" -o -iname \"*.phtml\" -o -iname \"*.phar\" ) \n  -mtime -30 -ls\n\n# 2. \u68c0\u67e5\u63d2\u4ef6\u7248\u672c\nwp plugin list --path=\/var\/www\/html --format=table | grep -i libre\n\n# 3. \u68c0\u7d22\u8bbf\u95ee\u65e5\u5fd7\u4e2d\u7684\u53ef\u7591\u4e0a\u4f20\u540e\u6267\u884c\u884c\u4e3a\ngrep -Ei \"uploads\/.+.(php|phtml)\" \/var\/log\/nginx\/access.log | tail -n 200\n\n# 4. \u5907\u4efd\u5e76\u9694\u79bb\u53ef\u7591\u6587\u4ef6\uff08\u4e0d\u8981\u76f4\u63a5\u5220\u9664\uff0c\u4fdd\u7559\u53d6\u8bc1\uff09\nmkdir -p \/root\/ir-quarantine &amp;&amp; \nfind \/var\/www\/html\/wp-content\/uploads -type f -iname \"*.php\" \n  -exec cp --parents {} \/root\/ir-quarantine\/ ;\n<\/pre>\n<\/div>\n<\/details>\n<h2 class=\"doc-h2\">\u56db\u3001\u7eb5\u6df1\u9632\u5fa1\uff1a\u628a WP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u6321\u5728\u67b6\u6784\u4e4b\u5916<\/h2>\n<p class=\"doc-p\">\u5355\u70b9\u4fee\u590d\u53ea\u80fd\u89e3\u51b3\u8fd9\u4e00\u6b21 CVE\uff0c\u67b6\u6784\u5c42\u9762\u7684\u6536\u655b\u624d\u80fd\u907f\u514d\u4e0b\u4e00\u6b21\u3002\u4e0b\u8868\u5bf9\u6bd4\u4e86\u4f20\u7edf WordPress \u4e0a\u4f20\u5904\u7406\u4e0e\u73b0\u4ee3\u52a0\u56fa\u65b9\u6848\u7684\u5173\u952e\u5dee\u5f02\uff1a<\/p>\n<div class=\"doc-table-wrapper\">\n<table class=\"doc-table\">\n<thead>\n<tr>\n<th>\u8bc4\u4f30\u7ef4\u5ea6<\/th>\n<th>\u4f20\u7edf\u63d2\u4ef6\u9ed8\u8ba4\u65b9\u6848<\/th>\n<th>\u73b0\u4ee3\u52a0\u56fa\u65b9\u6848<\/th>\n<th>\u67b6\u6784\u6536\u76ca<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6587\u4ef6\u7c7b\u578b\u6821\u9a8c<\/td>\n<td>\u4ec5\u524d\u7aef accept \u9650\u5236<\/td>\n<td>\u670d\u52a1\u7aef\u6269\u5c55\u540d + MIME + \u9b54\u6570\u4e09\u91cd\u6821\u9a8c<\/td>\n<td><span class=\"badge-tag-green\">\u963b\u65ad\u4f2a\u88c5\u4e0a\u4f20<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u5b58\u50a8\u4f4d\u7f6e<\/td>\n<td>\u76f4\u63a5\u843d wp-content\/uploads<\/td>\n<td>\u975e Web \u6839\u9694\u79bb\u76ee\u5f55 + \u53d7\u63a7\u4e0b\u8f7d\u63a5\u53e3<\/td>\n<td><span class=\"badge-tag-green\">\u6d88\u9664\u76f4\u63a5\u6267\u884c\u9762<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u6587\u4ef6\u540d\u7b56\u7565<\/td>\n<td>\u4fdd\u7559\u539f\u59cb\u6587\u4ef6\u540d<\/td>\n<td>UUID \u91cd\u547d\u540d + \u5265\u79bb\u6269\u5c55\u540d\u8bed\u4e49<\/td>\n<td><span class=\"badge-tag-green\">\u9632\u8986\u76d6\u4e0e\u8def\u5f84\u731c\u6d4b<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u6267\u884c\u6743\u9650<\/td>\n<td>uploads \u76ee\u5f55\u53ef\u89e3\u6790 PHP<\/td>\n<td>Nginx\/Apache \u5c42\u7981\u6b62\u811a\u672c\u6267\u884c<\/td>\n<td><span class=\"badge-tag-green\">\u515c\u5e95\u963b\u65ad RCE<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u8fb9\u754c\u9632\u62a4<\/td>\n<td>\u65e0\u4e13\u9879\u89c4\u5219<\/td>\n<td>WAF \u865a\u62df\u8865\u4e01 + \u4e0a\u4f20\u9891\u7387\u9650\u5236<\/td>\n<td><span class=\"badge-tag-green\">\u4e89\u53d6\u4fee\u590d\u7a97\u53e3<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3 class=\"doc-h3\">4.1 \u4fee\u590d\u540e\u7684\u9a8c\u8bc1\u6e05\u5355<\/h3>\n<p class=\"doc-p\">\u5b8c\u6210\u52a0\u56fa\u540e\uff0c\u52a1\u5fc5\u6309\u4ee5\u4e0b\u6e05\u5355\u9010\u9879\u9a8c\u8bc1\uff0c\u786e\u8ba4 WP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u5df2\u88ab\u771f\u6b63\u5c01\u5835\uff0c\u800c\u4e0d\u662f\u4ec5\u4ec5\u201c\u770b\u8d77\u6765\u4fee\u4e86\u201d\uff1a<\/p>\n<ul class=\"doc-list\">\n<li>\u7528 curl \u6784\u9020 <code>shell.php<\/code> \u4e0a\u4f20\u8bf7\u6c42\uff0c\u786e\u8ba4\u8fd4\u56de 403 \u6216\u7c7b\u578b\u9519\u8bef\uff0c\u4e14\u6587\u4ef6\u672a\u843d\u76d8\u3002<\/li>\n<li>\u76f4\u63a5\u8bbf\u95ee uploads \u4e0b\u5386\u53f2 PHP \u6587\u4ef6\u8def\u5f84\uff0c\u786e\u8ba4\u8fd4\u56de 403 \u800c\u975e\u6267\u884c\u7ed3\u679c\u3002<\/li>\n<li>\u68c0\u67e5 <code>disable_functions<\/code> \u662f\u5426\u751f\u6548\uff0c\u786e\u8ba4\u5373\u4f7f\u6709\u6f0f\u7f51\u811a\u672c\u4e5f\u65e0\u6cd5\u8c03\u7528\u7cfb\u7edf\u547d\u4ee4\u3002<\/li>\n<li>\u590d\u6838 WAF \u65e5\u5fd7\uff0c\u786e\u8ba4\u865a\u62df\u8865\u4e01\u89c4\u5219\u547d\u4e2d\u6d4b\u8bd5\u8bf7\u6c42\u4e14\u65e0\u8bef\u6740\u6b63\u5e38\u56fe\u7247\u4e0a\u4f20\u3002<\/li>\n<li>\u5bf9 uploads \u76ee\u5f55\u505a\u4e00\u6b21\u5168\u91cf\u626b\u63cf\uff0c\u786e\u8ba4\u65e0\u5386\u53f2\u9057\u7559\u540e\u95e8\u3002<\/li>\n<\/ul>\n<div class=\"doc-callout doc-callout-info\">\n<div class=\"doc-callout-title\">\ud83d\udca1 \u67b6\u6784\u6838\u5fc3\u51b3\u7b56<\/div>\n<p>\u5bf9\u4e8e\u591a\u7ad9\u70b9 WordPress \u96c6\u7fa4\uff0c\u5efa\u8bae\u628a\u4e0a\u4f20\u76ee\u5f55\u52a0\u56fa\u914d\u7f6e\u7eb3\u5165\u57fa\u7840\u8bbe\u65bd\u5373\u4ee3\u7801\uff08IaC\uff09\u6a21\u677f\uff0c\u968f\u7ad9\u70b9\u521b\u5efa\u81ea\u52a8\u4e0b\u53d1\u3002\u8fd9\u6837 WP Libre Form 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href=\"https:\/\/btc354.com\/index.php\/category\/open-source\/\">\u6d4f\u89c8\u66f4\u591a\u3010Open Source\u3011\u6280\u672f\u67b6\u6784\u4e0e\u5de5\u7a0b\u5b9e\u6218\u6587\u7ae0<\/a><\/li>\n<li><strong>\u63a8\u8350\u6df1\u5ea6\u9605\u8bfb\uff1a<\/strong><a href=\"https:\/\/btc354.com\/index.php\/2026\/11\/10\/esim-%e5%ae%89%e5%85%a8%e6%9e%b6%e6%9e%84%e6%b7%b1%e5%ba%a6%e6%8b%86%e8%a7%a3%ef%bc%9a%e5%9b%bd%e8%a1%8c-iphone-%e9%9a%8f%e6%84%8f%e6%b7%bb%e5%8a%a0-esim-%e8%83%8c%e5%90%8e%e7%9a%84%e4%bf%a1%e4%bb%bb\/\">eSIM \u5b89\u5168\u67b6\u6784\u6df1\u5ea6\u62c6\u89e3\uff1a\u56fd\u884c iPhone \u968f\u610f\u6dfb\u52a0 eSIM \u80cc\u540e\u7684\u4fe1\u4efb\u94fe\u3001\u653b\u51fb\u9762\u4e0e\u5408\u89c4\u98ce\u9669<\/a><\/li>\n<li><strong>\u63a8\u8350\u6df1\u5ea6\u9605\u8bfb\uff1a<\/strong><a href=\"https:\/\/btc354.com\/index.php\/2026\/11\/02\/%e7%be%8e%e5%9b%bd%e5%8a%b3%e5%8a%a8%e4%bb%bd%e9%a2%9d%e8%b7%8c%e8%87%b31947%e5%b9%b4%e4%bb%a5%e6%9d%a5%e6%9c%80%e4%bd%8e%ef%bc%9a%e4%bb%8ebls%e6%95%b0%e6%8d%ae%e7%9c%8b%e8%b5%84%e6%9c%ac%e4%b8%8e\/\">\u7f8e\u56fd\u52b3\u52a8\u4efd\u989d\u8dcc\u81f31947\u5e74\u4ee5\u6765\u6700\u4f4e\uff1a\u4eceBLS\u6570\u636e\u770b\u8d44\u672c\u4e0e\u52b3\u52a8\u7684\u5b8f\u89c2\u67b6\u6784\u5931\u8861<\/a><\/li>\n<li><strong>\u5168\u7ad9\u6280\u672f\u5f52\u6863\uff1a<\/strong><a href=\"https:\/\/btc354.com\/\">\u8fd4\u56de \u4e2a\u4eba\u5b66\u4e60\u7ad9\u70b9 \u9996\u9875\u63a2\u7d22\u66f4\u591a\u6280\u672f\u524d\u6cbf<\/a><\/li>\n<\/ul>\n<\/div>\n<div class=\"doc-ref-box\">\n  <strong>\u539f\u6587\u51fa\u5904\u4e0e\u6743\u5a01\u6eaf\u6e90\u58f0\u660e\uff1a<\/strong><br \/>\n  \u672c\u6587\u6838\u5fc3\u6280\u672f\u80cc\u666f\u6e90\u81ea\u6d77\u5916\u4e00\u7ebf\u6280\u672f\u7814\u7a76\uff1a<br \/>\n  <a href=\"https:\/\/nvd.nist.gov\/vuln\/detail\/CVE-2026-118423\" target=\"_blank\" rel=\"noopener noreferrer\">NVD &#8211; CVE-2026-118423 (WP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e)<\/a>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5ea6\u5256\u6790 CVE-2026-118423\uff1aWP Libre Form \u4efb\u610f\u6587\u4ef6\u4e0a\u4f20\u6f0f\u6d1e\u3002\u672c\u6587\u4ece\u67b6\u6784\u5e08\u89c6\u89d2\u62c6\u89e3\u672a\u9274\u6743 PHP \u6587\u4ef6\u4e0a\u4f20\u5bfc\u81f4\u8fdc\u7a0b\u4ee3\u7801\u6267\u884c\u7684\u653b\u51fb\u94fe\u8def\uff0c\u63d0\u4f9b\u5305\u542b WAF \u865a\u62df\u8865\u4e01\u3001\u4e0a\u4f20\u76ee\u5f55\u52a0\u56fa\u4e0e\u4ee3\u7801\u7ea7\u4fee\u590d\u7684\u5b8c\u6574\u5e94\u6025\u54cd\u5e94\u65b9\u6848\uff0c\u5e76\u7ed9\u51fa\u751f\u4ea7\u73af\u5883\u9a8c\u8bc1\u4e0e\u56de\u5f52\u6d4b\u8bd5\u6e05\u5355\uff0c\u52a9\u4f60\u5728\u6570\u5c0f\u65f6\u5185\u5b8c\u6210\u98ce\u9669\u6536\u655b\u3002<\/p>\n","protected":false},"author":2,"featured_media":915,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[78,424],"tags":[281,276,280,273,275,274],"class_list":["post-810","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-open-source","category-security","tag-cve-2026-118423","tag-waf","tag-wordpress","tag-273","tag-275","tag-274"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>WP Libre Form 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content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"960\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"tan, keito\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@tqd354\" \/>\n<meta name=\"twitter:site\" content=\"@tqd354\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"tan, keito\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 \u5206\" \/>\n<script type=\"application\/ld+json\" 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