{"id":"EUVD-2026-8697","revision":"9462d2e4e9bd4a408d7ea5dedfb70d2a","records":[{"revision":"9462d2e4e9bd4a408d7ea5dedfb70d2a","observedAt":"2026-11-13T15:59:18.828+00:00","statement":{"source":"euvd","id":"EUVD-2026-8697","aliases":["CVE-2026-27795","GHSA-mphv-75cg-56wg"],"title":"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 UR…","description":"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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N","score":4.1,"severity":null}],"references":["https://github.com/langchain-ai/langchainjs/security/advisories/GHSA-mphv-75cg-56wg","https://github.com/langchain-ai/langchainjs/security/advisories/GHSA-gf3v-fwqg-4vh7","https://github.com/langchain-ai/langchainjs/pull/9990","https://github.com/langchain-ai/langchainjs/commit/2812d2b2b9fd9343c4850e2ab906b8cf440975ee","https://github.com/langchain-ai/langchainjs/commit/d5e3db0d01ab321ec70a875805b2f74aefdadf9d","https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain%2Fcommunity%401.1.14","https://github.com/langchain-ai/langchainjs/releases/tag/%40langchain%2Fcommunity%401.1.18"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-8697","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Feb 25, 2026, 5:30:01 PM","dateUpdated":"Feb 25, 2026, 6:42:52 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-8697","identifiers":["EUVD-2026-8697","CVE-2026-27795","GHSA-mphv-75cg-56wg"]},"retained":false,"historicalAffected":[]}],"coverage":[]}