CVE-2024-58340 — LangChain versions up to and including 0.3.1 contain a...
CVE-2024-58340 漏洞深度分析
漏洞概述
CVE 编号： CVE-2024-58340
CVSS 评分： 8.7（HIGH）
CVSS 向量： CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE 分类： CWE-1333
漏洞状态： Analyzed
发布时间： 2026-01-12T23:15:51.780
最后更新： 2026-07-14T23:17:18.157
漏洞描述
LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service (ReDoS) vulnerability in the MRKLOutputParser.parse() method (libs/langchain/langchain/agents/mrkl/output_parser.py). The parser applies a backtracking-prone regular expression when extracting tool actions from model output. An attacker who can supply or influence the parsed text (for example via prompt injection in downstream applications that pass LLM output directly into MRKLOutputParser.parse()) can trigger excessive CPU consumption by providing a crafted payload, causing significant parsing delays and a denial-of-service condition.
影响分析
此漏洞的具体影响取决于实际利用场景。"
修复建议
- 及时关注厂商发布的安全更新和补丁
- 升级受影响组件到最新版本
- 如无法立即升级，参考厂商提供的临时缓解措施
- 加强网络访问控制和监控