Threats Tagged 'cve-2026-27795'
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Threats Tagged 'cve-2026-27795'
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CVE-2026-27795: CWE-918: Server-Side Request Forgery (SSRF) in langchain-ai langchainjsCVE-2026-27795 0 LangChain is a framework for building LLM-powered applications. Prior to version 1.1.8, a redirect-based Server-Side Request Forgery (SSRF) bypass exists in `RecursiveUrlLoader` in `@langchain/community`. The loader validates the initial URL but allows the underlying fetch to follow redirects automatically, which permits a transition from a safe public URL to an internal or metadata endpoint without revalidation. This is a bypass of the SSRF protections introduced in 1.1.14 (CVE-2026-26019). Users should upgrade to `@langchain/community` 1.1.18, which validates every redirect hop by disabling automatic redirects and re-validating `Location` targets before following them. In this version, automatic redirects are disabled (`redirect: "manual"`), each 3xx `Location` is resolved and validated with `validateSafeUrl()` before the next request, and a maximum redirect limit prevents infinite loops. Join the discussion | CVE Database V5 | 02/25/2026, 17:30:01 UTC Added: 02/25/2026, 21:40:00 UTC |
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