{"id":828,"date":"2026-11-12T11:28:35","date_gmt":"2026-11-12T03:28:35","guid":{"rendered":"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-99bbbe909a09da5803c1f864631ef27f1f8eb961edf0bc9ba645547037a68d48\/"},"modified":"2026-11-12T11:28:35","modified_gmt":"2026-11-12T03:28:35","slug":"pulsemate-security-99bbbe909a09da5803c1f864631ef27f1f8eb961edf0bc9ba645547037a68d48","status":"publish","type":"post","link":"https:\/\/btc354.com\/index.php\/2026\/11\/12\/pulsemate-security-99bbbe909a09da5803c1f864631ef27f1f8eb961edf0bc9ba645547037a68d48\/","title":{"rendered":"Langium \u590d\u6742\u5ea6\u6f0f\u6d1e\u6df1\u5ea6\u5e94\u6025\u54cd\u5e94\uff1aCVE-2026-124683 \u4e8c\u6b21\u65b9\u5206\u8bcd DoS \u7684\u6839\u56e0\u62c6\u89e3\u4e0e\u751f\u4ea7\u52a0\u56fa"},"content":{"rendered":"<blockquote class=\"doc-lead\"><p><strong>\u5bfc\u8bed\uff1a<\/strong>Langium \u590d\u6742\u5ea6\u6f0f\u6d1e\uff08CVE-2026-124683\uff09\u662f\u8fd1\u671f\u8bed\u8a00\u5de5\u7a0b\u9886\u57df\u6700\u503c\u5f97\u8b66\u60d5\u7684\u4e00\u7c7b\u201c\u975e\u5185\u5b58\u578b\u201d\u9ad8\u5371\u7f3a\u9677\u2014\u2014\u5b83\u4e0d\u8d8a\u754c\u3001\u4e0d\u6ce8\u5165\uff0c\u4ec5\u51ed\u4e00\u6bb5\u51e0\u767e KB \u7684\u7f29\u8fdb\u5bc6\u96c6\u6587\u672c\uff0c\u5c31\u80fd\u628a Node.js \u5355\u7ebf\u7a0b\u4e8b\u4ef6\u5faa\u73af\u6309\u5728\u5730\u4e0a\u6469\u64e6\u6570\u5341\u79d2\u3002\u672c\u6587\u4ee5\u67b6\u6784\u5e08\u89c6\u89d2\uff0c\u4ece\u7b97\u6cd5\u6839\u56e0\u3001\u653b\u51fb\u9762\u5efa\u6a21\u5230\u8865\u4e01\u5347\u7ea7\u4e0e\u9632\u5fa1\u6027\u7f16\u7801\uff0c\u5b8c\u6574\u8fd8\u539f\u8fd9\u6b21\u5e94\u6025\u54cd\u5e94\u7684\u51b3\u7b56\u94fe\u8def\u3002<\/p><\/blockquote>\n<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\">Eclipse Langium 3.2.0\u20134.4.0 \/ Node.js<\/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\">\u963b\u65ad O(n\u00b2) DoS\uff0c\u4e8b\u4ef6\u5faa\u73af\u963b\u585e\u5f52\u96f6<\/span><\/div>\n<\/div>\n<h2 class=\"doc-h2\">\u4e00\u3001Langium \u590d\u6742\u5ea6\u6f0f\u6d1e\u7684\u7b97\u6cd5\u6839\u56e0\uff1a\u4e00\u6b21\u201c\u5168\u91cf\u91cd\u626b\u201d\u5f15\u53d1\u7684\u4e8c\u6b21\u65b9\u707e\u96be<\/h2>\n<p class=\"doc-p\">\u5148\u7ed9\u7ed3\u8bba\uff1a\u8fd9\u4e0d\u662f\u4e00\u4e2a\u201c\u5199\u5f97\u4e0d\u591f\u4f18\u96c5\u201d\u7684\u6027\u80fd\u95ee\u9898\uff0c\u800c\u662f\u4e00\u4e2a\u53ef\u88ab\u8fdc\u7a0b\u89e6\u53d1\u7684\u7b97\u6cd5\u590d\u6742\u5ea6\u7f3a\u9677\uff08CWE-407: Inefficient Algorithmic Complexity\uff09\u3002\u6f0f\u6d1e\u4f4d\u4e8e Langium \u7684 <strong>opt-in<\/strong> \u7ec4\u4ef6\u2014\u2014<code>IndentationAwareTokenBuilder<\/code> \u4e0e <code>IndentationAwareLexer<\/code>\u3002\u8fd9\u4e24\u4e2a\u7ec4\u4ef6\u4e3a\u7f29\u8fdb\u654f\u611f\u8bed\u8a00\uff08\u5982 Python \u98ce\u683c DSL\u3001YAML \u7c7b\u914d\u7f6e\u8bed\u8a00\uff09\u63d0\u4f9b DEDENT \u4ee4\u724c\u751f\u6210\u80fd\u529b\u3002<\/p>\n<p class=\"doc-p\">\u95ee\u9898\u51fa\u5728 DEDENT \u4ee4\u724c\u7684\u6784\u9020\u8def\u5f84\u4e0a\u3002\u5f53\u8bcd\u6cd5\u5668\u9700\u8981\u4ea7\u51fa\u4e00\u4e2a DEDENT \u65f6\uff0ctoken builder \u4e3a\u4e86\u7ed9\u8be5\u4ee4\u724c\u6807\u6ce8\u51c6\u786e\u7684\u884c\u53f7\uff0c\u4f1a<strong>\u91cd\u65b0\u626b\u63cf\u6574\u4e2a\u524d\u5e8f\u6587\u6863\u6587\u672c<\/strong>\u6765\u91cd\u7b97\u884c\u53f7\u3002\u8fd9\u4e2a\u5b9e\u73b0\u5047\u8bbe\u201c\u7f29\u8fdb\u53d8\u5316\u662f\u7a00\u758f\u4e8b\u4ef6\u201d\uff0c\u5728\u6b63\u5e38\u4ee3\u7801\u91cc\u786e\u5b9e\u5982\u6b64\uff1b\u4f46\u4e00\u65e6\u9047\u5230\u201c\u51e0\u4e4e\u6bcf\u4e00\u884c\u7f29\u8fdb\u90fd\u5728\u53d8\u5316\u201d\u7684\u6587\u6863\uff0c\u6bcf\u6b21 DEDENT \u90fd\u89e6\u53d1\u4e00\u6b21 O(n) \u7684\u5168\u91cf\u626b\u63cf\uff0c\u7d2f\u8ba1\u590d\u6742\u5ea6\u76f4\u63a5\u9000\u5316\u4e3a O(n\u00b2)\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>\u884c\u53f7\u672c\u5e94\u662f\u8bcd\u6cd5\u5206\u6790\u8fc7\u7a0b\u4e2d\u7684\u201c\u589e\u91cf\u72b6\u6001\u201d\uff0c\u800c\u975e\u201c\u53ef\u56de\u6eaf\u91cd\u7b97\u7684\u6d3e\u751f\u91cf\u201d\u3002\u628a\u884c\u53f7\u5f53\u4f5c\u9700\u8981\u91cd\u626b\u624d\u80fd\u5f97\u5230\u7684\u91cf\uff0c\u662f\u8fd9\u6b21\u590d\u6742\u5ea6\u6f0f\u6d1e\u7684\u67b6\u6784\u7ea7\u6839\u56e0\u3002\u4fee\u590d\u65b9\u5411\u5e94\u662f\u7ef4\u62a4\u4e00\u4e2a\u968f\u626b\u63cf\u6e38\u6807\u9012\u589e\u7684 line counter\uff0c\u800c\u4e0d\u662f\u5728 DEDENT \u65f6\u56de\u5934\u91cd\u7b97\u3002<\/p><\/div>\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> Langium \u7f29\u8fdb\u611f\u77e5\u5206\u8bcd\u5668 O(n\u00b2) \u963b\u585e\u94fe\u8def\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 \u63a5\u5165\u5c42 [\"\u8868\u73b0\u5c42\u4e0e\u63a5\u5165\u7f51\u5173 (Client &amp; Gateway Tier)\"]\n        A[\"\u5916\u90e8\u63d0\u4ea4\u7684\u7f29\u8fdb\u654f\u611f\u6587\u6863 (\u6570\u767e KB)\"] --&gt; B[\"\u8bed\u8a00\u670d\u52a1\u5165\u53e3 (LSP \/ HTTP Parse API)\"]\n    end\n    subgraph \u89c4\u5219\u5c42 [\"\u8bcd\u6cd5\u8c03\u5ea6\u4e0e\u7f29\u8fdb\u5224\u5b9a\u5c42 (Lexer &amp; Indent Tier)\"]\n        B --&gt; C[\"IndentationAwareLexer \u9010\u884c\u626b\u63cf\"]\n        C --&gt; D{\"\u7f29\u8fdb\u5c42\u7ea7\u662f\u5426\u4e0b\u964d?\"}\n    end\n    subgraph \u9886\u57df\u5c42 [\"\u6838\u5fc3\u4ee4\u724c\u6784\u9020\u4e0e\u91cd\u626b\u5f15\u64ce (Token Builder Tier)\"]\n        D --&gt;|\"\u662f: \u4ea7\u51fa DEDENT\"| E[\"IndentationAwareTokenBuilder \u5168\u91cf\u91cd\u626b\u524d\u6587\"]\n        E --&gt; F[\"\u91cd\u7b97\u884c\u53f7 O(n) x \u6bcf\u884c DEDENT = O(n^2)\"]\n        D --&gt;|\"\u5426: \u5e38\u89c4\u4ee4\u724c\"| G[\"\u589e\u91cf\u63a8\u8fdb\u626b\u63cf\u6e38\u6807\"]\n    end\n    subgraph \u5b58\u50a8\u5c42 [\"\u8fd0\u884c\u65f6\u4e0e\u57fa\u7840\u8bbe\u65bd (Runtime Tier)\"]\n        F --&gt; H[\"\u540c\u6b65\u963b\u585e Node.js \u4e8b\u4ef6\u5faa\u73af\u6570\u5341\u79d2\"]\n        H --&gt; I[(\"\u540c\u8fdb\u7a0b\u6240\u6709\u7528\u6237\u8bf7\u6c42\u88ab DoS\")]\n        G --&gt; J[(\"\u6b63\u5e38\u8fd4\u56de AST\")]\n    end\n  <\/pre>\n<div class=\"doc-arch-caption\">\u56fe 1: Langium \u590d\u6742\u5ea6\u6f0f\u6d1e\u7684 O(n\u00b2) \u963b\u585e\u94fe\u8def\u2014\u2014\u7f29\u8fdb\u5bc6\u96c6\u6587\u6863\u89e6\u53d1 DEDENT \u5168\u91cf\u91cd\u626b\uff0c\u540c\u6b65\u963b\u585e\u4e8b\u4ef6\u5faa\u73af\u5f62\u6210 DoS\u3002<\/div>\n<\/div>\n<h2 class=\"doc-h2\">\u4e8c\u3001\u5f71\u54cd\u9762\u7cbe\u786e\u5efa\u6a21\uff1a\u8c01\u771f\u6b63\u66b4\u9732\u5728 Langium \u590d\u6742\u5ea6\u6f0f\u6d1e\u4e4b\u4e0b<\/h2>\n<p class=\"doc-p\">\u5b89\u5168\u901a\u544a\u91cc\u6709\u4e00\u53e5\u6781\u5176\u5173\u952e\u7684\u8bdd\uff1a<strong>\u4f7f\u7528 DefaultLexer \u4e0e DefaultTokenBuilder \u6784\u5efa\u7684\u8bed\u8a00\u4e0d\u53d7\u5f71\u54cd<\/strong>\u3002\u8fd9\u610f\u5473\u7740\u7edd\u5927\u591a\u6570\u201c\u5f00\u7bb1\u5373\u7528\u201d\u7684 Langium \u9879\u76ee\u662f\u5b89\u5168\u7684\uff0c\u98ce\u9669\u96c6\u4e2d\u5728\u4e3b\u52a8\u542f\u7528\u4e86\u7f29\u8fdb\u611f\u77e5\u80fd\u529b\u7684\u8bed\u8a00\u5b9e\u73b0\u4e0a\u3002\u4f5c\u4e3a\u67b6\u6784\u5e08\uff0c\u5e94\u6025\u54cd\u5e94\u7684\u7b2c\u4e00\u6b65\u4e0d\u662f\u76f2\u76ee\u5347\u7ea7\uff0c\u800c\u662f\u7cbe\u786e\u5708\u5b9a\u66b4\u9732\u9762\u3002<\/p>\n<h3 class=\"doc-h3\">2.1 \u66b4\u9732\u9762\u5224\u5b9a\u6e05\u5355<\/h3>\n<ul class=\"doc-list\">\n<li><strong>\u9ad8\u5371\u66b4\u9732<\/strong>\uff1a\u8bed\u8a00\u5b9a\u4e49\u4e2d\u663e\u5f0f\u914d\u7f6e\u4e86 <code>IndentationAwareTokenBuilder<\/code> \u6216 <code>IndentationAwareLexer<\/code>\uff0c\u4e14\u89e3\u6790\u5165\u53e3\u63a5\u53d7<strong>\u4e0d\u53ef\u4fe1\u5916\u90e8\u8f93\u5165<\/strong>\uff08\u5728\u7ebf\u7f16\u8f91\u5668\u3001LSP \u670d\u52a1\u3001CI \u4e2d\u7684\u7528\u6237\u63d0\u4ea4\u6587\u4ef6\uff09\u3002<\/li>\n<li><strong>\u4e2d\u5371\u66b4\u9732<\/strong>\uff1a\u542f\u7528\u4e86\u7f29\u8fdb\u611f\u77e5\uff0c\u4f46\u8f93\u5165\u4ec5\u6765\u81ea\u5185\u90e8\u53ef\u4fe1\u4ed3\u5e93\uff0c\u4e14\u89e3\u6790\u8fd0\u884c\u5728\u72ec\u7acb worker \u8fdb\u7a0b\u4e2d\u3002<\/li>\n<li><strong>\u4f4e\u5371\/\u65e0\u5f71\u54cd<\/strong>\uff1a\u4ec5\u4f7f\u7528 <code>DefaultLexer<\/code> \/ <code>DefaultTokenBuilder<\/code>\uff1b\u6216\u7f29\u8fdb\u611f\u77e5\u4ec5\u7528\u4e8e\u672c\u5730 CLI \u4e00\u6b21\u6027\u89e3\u6790\u3002<\/li>\n<\/ul>\n<h3 class=\"doc-h3\">2.2 \u7248\u672c\u5f71\u54cd\u77e9\u9635<\/h3>\n<div class=\"doc-table-wrapper\">\n<table class=\"doc-table\">\n<thead>\n<tr>\n<th>Langium \u7248\u672c\u533a\u95f4<\/th>\n<th>\u7f29\u8fdb\u611f\u77e5\u7ec4\u4ef6<\/th>\n<th>\u53d7\u5f71\u54cd\u72b6\u6001<\/th>\n<th>\u5904\u7f6e\u5efa\u8bae<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>&lt; 3.2.0<\/td>\n<td>\u672a\u5f15\u5165 \/ \u65e7\u5b9e\u73b0<\/td>\n<td><span class=\"badge-tag-green\">\u4e0d\u53d7\u5f71\u54cd<\/span><\/td>\n<td>\u65e0\u9700\u52a8\u4f5c\uff0c\u5173\u6ce8\u540e\u7eed\u5347\u7ea7<\/td>\n<\/tr>\n<tr>\n<td>3.2.0 \u2013 4.4.0<\/td>\n<td>IndentationAwareTokenBuilder \/ Lexer<\/td>\n<td><span class=\"badge-tag-red\">\u9ad8\u5371\u53d7\u5f71\u54cd<\/span><\/td>\n<td>\u5347\u7ea7\u81f3\u4fee\u590d\u7248\u672c\u6216\u7981\u7528\u7f29\u8fdb\u611f\u77e5<\/td>\n<\/tr>\n<tr>\n<td>3.2.0 \u2013 4.4.0<\/td>\n<td>DefaultLexer \/ DefaultTokenBuilder<\/td>\n<td><span class=\"badge-tag-green\">\u4e0d\u53d7\u5f71\u54cd<\/span><\/td>\n<td>\u65e0\u9700\u52a8\u4f5c<\/td>\n<\/tr>\n<tr>\n<td>&gt; 4.4.0\uff08\u4fee\u590d\u7248\uff09<\/td>\n<td>\u5168\u90e8<\/td>\n<td><span class=\"badge-tag-green\">\u5df2\u4fee\u590d<\/span><\/td>\n<td>\u9a8c\u8bc1\u540e\u5168\u91cf\u63a8\u5e7f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\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>\u4e0d\u8981\u7528\u201c\u6211\u4eec\u7684\u8bed\u8a00\u4e0d\u662f\u7f29\u8fdb\u654f\u611f\u8bed\u8a00\u201d\u6765\u8c41\u514d\u81ea\u5df1\u3002\u5f88\u591a\u56e2\u961f\u5728\u5b9e\u73b0 Markdown \u98ce\u683c DSL\u3001\u914d\u7f6e\u6a21\u677f\u3001\u751a\u81f3\u81ea\u5b9a\u4e49\u89c4\u5219\u811a\u672c\u65f6\uff0c\u4f1a\u987a\u624b\u542f\u7528\u7f29\u8fdb\u611f\u77e5\u4ee5\u83b7\u5f97\u66f4\u53cb\u597d\u7684\u8bed\u6cd5\u3002\u8bf7\u4ee5\u4ee3\u7801\u68c0\u7d22\u4e3a\u51c6\uff1a\u5168\u5c40\u641c\u7d22 <code>IndentationAware<\/code> \u5173\u952e\u5b57\uff0c\u800c\u4e0d\u662f\u51ed\u8bb0\u5fc6\u5224\u65ad\u3002<\/div>\n<h2 class=\"doc-h2\">\u4e09\u3001\u653b\u51fb\u9762\u4e0e DoS \u653e\u5927\u6548\u5e94\uff1a\u4e3a\u4ec0\u4e48\u201c\u51e0\u5341\u79d2\u201d\u8db3\u4ee5\u6253\u57ae\u4e00\u4e2a\u670d\u52a1<\/h2>\n<p class=\"doc-p\">CVSS 8.7 \u7684\u8bc4\u5206\u5e76\u975e\u5371\u8a00\u8038\u542c\u3002Node.js \u7684\u89e3\u6790\u8def\u5f84\u662f<strong>\u540c\u6b65<\/strong>\u7684\u2014\u2014\u8bcd\u6cd5\u5206\u6790\u5728\u4e8b\u4ef6\u5faa\u73af\u7684\u4e3b\u7ebf\u7a0b\u4e0a\u6267\u884c\uff0c\u671f\u95f4\u65e0\u6cd5\u5904\u7406\u4efb\u4f55\u5176\u4ed6\u56de\u8c03\u3002\u8fd9\u610f\u5473\u7740\u4e00\u4e2a\u7cbe\u5fc3\u6784\u9020\u7684\u7f29\u8fdb\u5bc6\u96c6\u6587\u6863\uff0c\u5728\u5206\u8bcd\u9636\u6bb5\u5c31\u4f1a\u628a\u6574\u4e2a\u8fdb\u7a0b\u201c\u51bb\u4f4f\u201d\u3002<\/p>\n<p class=\"doc-p\">\u653e\u5927\u6548\u5e94\u4f53\u73b0\u5728\u4e09\u4e2a\u5c42\u9762\uff1a<\/p>\n<ul class=\"doc-list\">\n<li><strong>\u5355\u8bf7\u6c42\u653e\u5927<\/strong>\uff1a\u51e0\u767e KB \u6587\u672c\u5373\u53ef\u9020\u6210\u6570\u5341\u79d2\u963b\u585e\uff0c\u653b\u51fb\u6210\u672c\u6781\u4f4e\uff0c\u65e0\u9700\u5927\u6d41\u91cf\u3002<\/li>\n<li><strong>\u6a2a\u5411\u653e\u5927<\/strong>\uff1a\u540c\u4e00 Node.js \u8fdb\u7a0b\u670d\u52a1\u7684<strong>\u6240\u6709\u7528\u6237<\/strong>\u5171\u4eab\u4e8b\u4ef6\u5faa\u73af\uff0c\u4e00\u4e2a\u6076\u610f\u8bf7\u6c42\u7b49\u4e8e\u5bf9\u5168\u4f53\u79df\u6237\u7684 DoS\u3002<\/li>\n<li><strong>\u91cd\u8bd5\u98ce\u66b4\u653e\u5927<\/strong>\uff1a\u5ba2\u6237\u7aef\u8d85\u65f6\u91cd\u8bd5\u4f1a\u6301\u7eed\u6295\u9012\u65b0\u7684\u6076\u610f\u6587\u6863\uff0c\u5f62\u6210\u81ea\u6211\u7ef4\u6301\u7684\u963b\u585e\u5faa\u73af\uff0c\u76d1\u63a7\u4e0a\u8868\u73b0\u4e3a\u201cCPU \u4e0d\u9ad8\u4f46\u8bf7\u6c42\u5168\u8d85\u65f6\u201d\u7684\u8be1\u5f02\u66f2\u7ebf\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>\u5982\u679c\u4f60\u7684\u8bed\u8a00\u670d\u52a1\u4e0e\u4e1a\u52a1 API \u90e8\u7f72\u5728<strong>\u540c\u4e00\u4e2a Node.js \u8fdb\u7a0b<\/strong>\uff0c\u90a3\u4e48 Langium \u590d\u6742\u5ea6\u6f0f\u6d1e\u7684\u7206\u70b8\u534a\u5f84\u7b49\u4e8e\u6574\u4e2a\u4e1a\u52a1\u7cfb\u7edf\u3002\u89e3\u6790\u7c7b\u5de5\u4f5c\u8d1f\u8f7d\u5fc5\u987b\u505a\u8fdb\u7a0b\u7ea7\u9694\u79bb\uff08worker_threads \u6216\u72ec\u7acb\u670d\u52a1\uff09\uff0c\u8fd9\u662f\u6bd4\u6253\u8865\u4e01\u66f4\u6839\u672c\u7684\u67b6\u6784\u9632\u7ebf\u3002<\/div>\n<h2 class=\"doc-h2\">\u56db\u3001\u5e94\u6025\u54cd\u5e94\u4e0e\u4fee\u590d\u843d\u5730\uff1a\u4ece\u8865\u4e01\u5347\u7ea7\u5230\u9632\u5fa1\u6027\u7f16\u7801<\/h2>\n<h3 class=\"doc-h3\">4.1 \u7b2c\u4e00\u6b65\uff1a\u9501\u5b9a\u5e76\u5347\u7ea7\u4f9d\u8d56<\/h3>\n<p class=\"doc-p\">\u4f18\u5148\u91c7\u7528\u5b98\u65b9\u4fee\u590d\u7248\u672c\u3002\u5347\u7ea7\u524d\u7528\u9501\u6587\u4ef6\u786e\u8ba4\u5b9e\u9645\u89e3\u6790\u5230\u7684\u7248\u672c\uff0c\u907f\u514d\u201c\u58f0\u660e\u5df2\u5347\u7ea7\u3001\u5b9e\u9645\u4ecd\u662f\u65e7\u7248\u201d\u7684\u5e7d\u7075\u4f9d\u8d56\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-title=\"\u5e94\u6025\u5347\u7ea7\u4e0e\u7248\u672c\u6838\u9a8c\"># 1. \u67e5\u770b\u5f53\u524d\u5b9e\u9645\u5b89\u88c5\u7248\u672c\nnpm ls langium\n\n# 2. \u5347\u7ea7\u5230\u4fee\u590d\u7248\u672c\uff08\u4ee5\u5b98\u65b9\u901a\u544a\u7684\u4fee\u590d\u7248\u672c\u53f7\u4e3a\u51c6\uff09\nnpm install langium@latest\n\n# 3. \u6838\u9a8c\u9501\u6587\u4ef6\u4e2d\u7684\u89e3\u6790\u7ed3\u679c\ngrep -A2 '\"langium\"' package-lock.json\n\n# 4. \u56de\u5f52\uff1a\u5bf9\u7f29\u8fdb\u5bc6\u96c6\u6837\u4f8b\u505a\u5206\u8bcd\u8017\u65f6\u57fa\u51c6\nnode --prof .\/scripts\/bench-tokenize.js<\/pre>\n<h3 class=\"doc-h3\">4.2 \u7b2c\u4e8c\u6b65\uff1a\u65e0\u6cd5\u7acb\u5373\u5347\u7ea7\u65f6\u7684\u4e34\u65f6\u7f13\u89e3<\/h3>\n<p class=\"doc-p\">\u82e5\u56e0\u7248\u672c\u9501\u5b9a\u6216\u517c\u5bb9\u6027\u65e0\u6cd5\u7acb\u523b\u5347\u7ea7\uff0c\u53ef\u91c7\u53d6\u201c\u7981\u7528\u7f29\u8fdb\u611f\u77e5 + \u8f93\u5165\u9650\u6d41\u201d\u7684\u7ec4\u5408\u7f13\u89e3\u3002\u6ce8\u610f\uff1a\u7981\u7528\u7f29\u8fdb\u611f\u77e5\u4f1a\u6539\u53d8\u8bed\u8a00\u8bed\u4e49\uff0c\u9700\u8bc4\u4f30\u5bf9\u73b0\u6709\u8bed\u6cd5\u7684\u5f71\u54cd\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"js\" data-enlighter-title=\"langium-config.js \u4e34\u65f6\u7f13\u89e3\u914d\u7f6e\">\/\/ \u4e34\u65f6\u7f13\u89e3\uff1a\u56de\u9000\u5230\u9ed8\u8ba4\u8bcd\u6cd5\u5668\u4e0e\u4ee4\u724c\u6784\u9020\u5668\n\/\/ \u6ce8\u610f\uff1a\u4f1a\u5931\u53bb DEDENT \u8bed\u4e49\uff0c\u9700\u8bc4\u4f30\u8bed\u6cd5\u517c\u5bb9\u6027\nimport { DefaultLexer, DefaultTokenBuilder } from 'langium';\n\nexport const languageConfig = {\n  \/\/ \u4e0d\u542f\u7528 IndentationAwareLexer \/ IndentationAwareTokenBuilder\n  lexer: new DefaultLexer(),\n  tokenBuilder: new DefaultTokenBuilder(),\n};\n\n\/\/ \u540c\u65f6\u5728\u89e3\u6790\u5165\u53e3\u589e\u52a0\u8f93\u5165\u4f53\u79ef\u786c\u4e0a\u9650\nconst MAX_DOC_BYTES = 256 * 1024;\nexport function guardInput(text) {\n  if (Buffer.byteLength(text, 'utf8') &gt; MAX_DOC_BYTES) {\n    throw new Error('DOC_TOO_LARGE');\n  }\n  return text;\n}<\/pre>\n<details class=\"doc-accordion\">\n<summary>\u70b9\u51fb\u5c55\u5f00\uff1a\u89e3\u6790\u9694\u79bb worker \u4e0e\u8d85\u65f6\u7194\u65ad\u53c2\u8003\u5b9e\u73b0<\/summary>\n<div class=\"doc-accordion-content\">\n<pre><code class=\"language-bash\">\/\/ parse-worker.js \u2014\u2014 \u5c06\u89e3\u6790\u653e\u5165\u72ec\u7acb worker\uff0c\u4e3b\u7ebf\u7a0b\u53ea\u7b49\u7ed3\u679c\nconst { parentPort, workerData } = require('worker_threads');\nconst { parseDocument } = require('.\/parser');\n\ntry {\n  const ast = parseDocument(workerData.text);\n  parentPort.postMessage({ ok: true, ast });\n} catch (e) {\n  parentPort.postMessage({ ok: false, error: String(e) });\n}\n\n\/\/ \u4e3b\u7ebf\u7a0b\u4fa7\uff1a\u5e26\u8d85\u65f6\u7194\u65ad\u7684\u8c03\u7528\u5c01\u88c5\nconst { Worker } = require('worker_threads');\nfunction parseWithTimeout(text, timeoutMs = 3000) {\n  return new Promise((resolve, reject) =&gt; {\n    const w = new Worker('.\/parse-worker.js', { workerData: { text } });\n    const timer = setTimeout(() =&gt; {\n      w.terminate();\n      reject(new Error('PARSE_TIMEOUT'));\n    }, timeoutMs);\n    w.once('message', (msg) =&gt; { clearTimeout(timer); resolve(msg); });\n    w.once('error', (err) =&gt; { clearTimeout(timer); reject(err); });\n  });\n}<\/code><\/pre>\n<\/div>\n<\/details>\n<h3 class=\"doc-h3\">4.3 \u7b2c\u4e09\u6b65\uff1a\u9632\u5fa1\u6027\u7f16\u7801\u89c4\u8303\u6c89\u6dc0<\/h3>\n<div class=\"doc-table-wrapper\">\n<table class=\"doc-table\">\n<thead>\n<tr>\n<th>\u9632\u5fa1\u7ef4\u5ea6<\/th>\n<th>\u8106\u5f31\u505a\u6cd5<\/th>\n<th>\u52a0\u56fa\u505a\u6cd5<\/th>\n<th>\u67b6\u6784\u6536\u76ca<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u884c\u53f7\u8ba1\u7b97<\/td>\n<td>DEDENT \u65f6\u5168\u91cf\u91cd\u626b\u524d\u6587<\/td>\n<td>\u7ef4\u62a4\u589e\u91cf line counter<\/td>\n<td><span class=\"badge-tag-green\">O(n\u00b2) \u2192 O(n)<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u89e3\u6790\u6267\u884c<\/td>\n<td>\u4e0e\u4e1a\u52a1\u540c\u8fdb\u7a0b\u540c\u6b65\u89e3\u6790<\/td>\n<td>worker_threads \/ \u72ec\u7acb\u670d\u52a1\u9694\u79bb<\/td>\n<td><span class=\"badge-tag-green\">\u7206\u70b8\u534a\u5f84\u6536\u655b<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u8f93\u5165\u6cbb\u7406<\/td>\n<td>\u65e0\u4f53\u79ef\u4e0e\u590d\u6742\u5ea6\u4e0a\u9650<\/td>\n<td>\u5b57\u8282\u4e0a\u9650 + \u89e3\u6790\u8d85\u65f6\u7194\u65ad<\/td>\n<td><span class=\"badge-tag-green\">DoS \u6210\u672c\u62ac\u5347<\/span><\/td>\n<\/tr>\n<tr>\n<td>\u4f9d\u8d56\u6cbb\u7406<\/td>\n<td>\u51ed\u8bb0\u5fc6\u5224\u65ad\u662f\u5426\u53d7\u5f71\u54cd<\/td>\n<td>\u4ee3\u7801\u68c0\u7d22 + \u9501\u6587\u4ef6\u6838\u9a8c<\/td>\n<td><span class=\"badge-tag-green\">\u66b4\u9732\u9762\u53ef\u5ba1\u8ba1<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\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>\u628a\u201c\u89e3\u6790\u4e0d\u53ef\u4fe1\u8f93\u5165\u201d\u89c6\u4e3a\u4e0e\u201c\u53cd\u5e8f\u5217\u5316\u4e0d\u53ef\u4fe1\u6570\u636e\u201d\u540c\u7b49\u7ea7\u7684\u98ce\u9669\u9762\u3002\u51e1\u662f\u540c\u6b65\u3001CPU \u5bc6\u96c6\u3001\u4e14\u8f93\u5165\u6765\u81ea\u5916\u90e8\u7684\u8def\u5f84\uff0c\u90fd\u5e94\u9ed8\u8ba4\u5177\u5907\uff1a\u4f53\u79ef\u4e0a\u9650\u3001\u65f6\u95f4\u4e0a\u9650\u3001\u8fdb\u7a0b\u9694\u79bb\u4e09\u9053\u95f8\u95e8\u3002Langium \u590d\u6742\u5ea6\u6f0f\u6d1e\u53ea\u662f\u53c8\u4e00\u6b21\u63d0\u9192\u3002<\/p><\/div>\n<h2 class=\"doc-h2\">\u4e94\u3001\u590d\u76d8\uff1aLangium \u590d\u6742\u5ea6\u6f0f\u6d1e\u7ed9\u8bed\u8a00\u5de5\u7a0b\u7684\u4e09\u6761\u957f\u671f\u6559\u8bad<\/h2>\n<p class=\"doc-p\">\u7b2c\u4e00\uff0c<strong>\u6d3e\u751f\u91cf\u4e0d\u8981\u56de\u6eaf\u91cd\u7b97<\/strong>\u3002\u884c\u53f7\u3001\u5217\u53f7\u3001\u504f\u79fb\u91cf\u8fd9\u7c7b\u4fe1\u606f\uff0c\u5728\u6d41\u5f0f\u626b\u63cf\u4e2d\u5929\u7136\u53ef\u589e\u91cf\u7ef4\u62a4\uff0c\u4efb\u4f55\u201c\u56de\u5934\u91cd\u626b\u201d\u7684\u5b9e\u73b0\u90fd\u57cb\u7740\u590d\u6742\u5ea6\u5730\u96f7\u3002\u7b2c\u4e8c\uff0c<strong>opt-in \u7ec4\u4ef6\u5f80\u5f80\u7f3a\u4e4f\u540c\u7b49\u5f3a\u5ea6\u7684\u5b89\u5168\u5ba1\u89c6<\/strong>\u3002\u9ed8\u8ba4\u8def\u5f84\u88ab\u53cd\u590d\u538b\u6d4b\uff0c\u53ef\u9009\u8def\u5f84\u5374\u5e38\u88ab\u5f53\u4f5c\u201c\u9ad8\u7ea7\u7528\u6cd5\u201d\u800c\u758f\u4e8e\u5ba1\u67e5\u3002\u7b2c\u4e09\uff0c<strong>\u540c\u6b65 API \u7684 DoS \u98ce\u9669\u88ab\u7cfb\u7edf\u6027\u4f4e\u4f30<\/strong>\u3002\u5728\u5355\u7ebf\u7a0b\u8fd0\u884c\u65f6\u91cc\uff0c\u4e00\u4e2a O(n\u00b2) \u7684\u7eaf\u8ba1\u7b97\u51fd\u6570\uff0c\u5176\u7834\u574f\u529b\u4e0d\u4e9a\u4e8e\u4e00\u6b21\u5185\u5b58\u7834\u574f\u6f0f\u6d1e\u3002<\/p>\n<p class=\"doc-p\">\u5bf9\u4e8e\u6b63\u5728\u7ef4\u62a4 Langium \u8bed\u8a00\u670d\u52a1\u7684\u56e2\u961f\uff0c\u5efa\u8bae\u628a\u672c\u6b21\u5e94\u6025\u54cd\u5e94\u6c89\u6dc0\u4e3a\u4e00\u6761\u5e38\u9a7b\u68c0\u67e5\u9879\uff1a\u6bcf\u6b21\u8bed\u8a00\u914d\u7f6e\u53d8\u66f4\u65f6\uff0c\u81ea\u52a8\u626b\u63cf\u662f\u5426\u5f15\u5165\u7f29\u8fdb\u611f\u77e5\u7ec4\u4ef6\uff0c\u5e76\u5bf9\u7f29\u8fdb\u5bc6\u96c6\u6837\u4f8b\u8dd1\u4e00\u6b21\u5206\u8bcd\u8017\u65f6\u57fa\u51c6\u3002Langium \u590d\u6742\u5ea6\u6f0f\u6d1e\u7684\u4fee\u590d\u4e0d\u6b62\u4e8e\u5347\u7ea7\u7248\u672c\u53f7\uff0c\u66f4\u5728\u4e8e\u628a\u201c\u7b97\u6cd5\u590d\u6742\u5ea6\u201d\u7eb3\u5165\u5b89\u5168\u5de6\u79fb\u7684\u68c0\u67e5\u6e05\u5355\u3002<\/p>\n<div class=\"doc-callout doc-callout-related\">\n<div class=\"doc-callout-title\">\ud83d\udd17 \u5ef6\u4f38\u9605\u8bfb\u4e0e\u4e13\u680f\u63a8\u8350<\/div>\n<ul class=\"doc-internal-links\">\n<li><strong>\u6240\u5c5e\u4e13\u680f\uff1a<\/strong><a href=\"https:\/\/btc354.com\/index.php\/category\/javascript\/\">\u6d4f\u89c8\u66f4\u591a\u3010JavaScript\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\/10\/31\/node-js-%e7%9f%ad%e4%bf%a1-2fa-otp-%e9%99%90%e6%b5%81%e6%9e%b6%e6%9e%84%e5%ae%9e%e6%88%98%ef%bc%9a%e4%bb%a5%e8%ba%ab%e4%bb%bd%e4%ba%a4%e6%8e%a5%e4%b8%ba%e6%a0%b8%e5%bf%83%e7%9a%84%e9%98%b2%e5%88%b7\/\">Node.js \u77ed\u4fe1 2FA OTP \u9650\u6d41\u67b6\u6784\u5b9e\u6218\uff1a\u4ee5\u8eab\u4efd\u4ea4\u63a5\u4e3a\u6838\u5fc3\u7684\u9632\u5237\u4e0e\u6210\u672c\u63a7\u5236\u4f53\u7cfb<\/a><\/li>\n<li><strong>\u63a8\u8350\u6df1\u5ea6\u9605\u8bfb\uff1a<\/strong><a 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href=\"https:\/\/github.com\/advisories\/GHSA-mw8j-wq3m-9899\" target=\"_blank\" rel=\"noopener noreferrer\">GitHub Advisory GHSA-mw8j-wq3m-9899 (CVE-2026-124683)<\/a>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5ea6\u5256\u6790 Eclipse Langium \u590d\u6742\u5ea6\u6f0f\u6d1e\uff08CVE-2026-124683\uff0cCVSS 8.7\uff09\uff1aIndentationAwareTokenBuilder \u5728\u751f\u6210 DEDENT \u65f6\u5168\u91cf\u91cd\u626b\u6587\u6863\u5bfc\u81f4 O(n\u00b2) \u5206\u8bcd\uff0c\u6570\u767e KB \u6076\u610f\u6587\u6863\u5373\u53ef\u963b\u585e Node.js \u4e8b\u4ef6\u5faa\u73af\u6570\u5341\u79d2\u5f15\u53d1 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