CVE-2026-72848

A flaw was found in langchain-community. An attacker who controls or influences an ingested sitemap can bypass domain restrictions in the SitemapLoader component by pointing a nested sitemap entry at an internal address. This allows the server to fetch internal resources even when...

CVE-2026-72848 langchain-community SitemapLoader Does Not Apply restrict_to_same_domain to Nested Sitemap Index Entries, Allowing Server-Side Request Forgery

SitemapLoader.parsesitemap in langchaincommunity/documentloaders/sitemap.py applies the documented restricttosamedomain control only to leaf url entries. The loop over url elements filters cross-domain locations, but the loop over nested sitemap elements passes the child loc straight to...

CVE-2026-72848 langchain-community SitemapLoader Does Not Apply restrict_to_same_domain to Nested Sitemap Index Entries, Allowing Server-Side Request Forgery

SitemapLoader.parsesitemap in langchaincommunity/documentloaders/sitemap.py applies the documented restricttosamedomain control only to leaf url entries. The loop over url elements filters cross-domain locations, but the loop over nested sitemap elements passes the child loc straight to...

PYSEC-2026-2561 Denial of service in langchain-community

Denial of service in SitemapLoader Document Loader in the langchain-community package, affecting versions below 0.2.5. The parsesitemap method, responsible for parsing sitemaps and extracting URLs, lacks a mechanism to prevent infinite recursion when a sitemap URL refers to the current sitemap...

PYSEC-2026-1516 Server-Side Request Forgery in langchain-community.retrievers.web_research.WebResearchRetriever

A Server-Side Request Forgery SSRF vulnerability exists in the Web Research Retriever component in langchain-community langchain-community.retrievers.webresearch.WebResearchRetriever. The vulnerability arises because the Web Research Retriever does not restrict requests to remote internet...

CVE-2026-12866

A flaw was found in expr-eval. A remote attacker can exploit this vulnerability by supplying crafted expressions to the toJSFunction API. These expressions are then compiled into native code using new Function, allowing the attacker to execute arbitrary JavaScript code. This can lead to arbitrary...

ROOT-APP-NPM-CVE-2026-26019 CVE-2026-26019 in @rootio/langchain__community - Patched by Root

Root has patched CVE-2026-26019 in the @rootio/langchaincommunity package for Root:npm. Multiple fixed versions available...

Server-side Request Forgery (SSRF)

Overview @langchain/community is a Third-party integrations for LangChain.js Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the RecursiveUrlLoader class. An attacker can access internal network resources or sensitive cloud metadata by supplying a public U...

@cognigy/cognigy-cli (>=1.9.7, <=2.2.7), @forestadmin/agent (>=1.71.0, <=1.72.9) +29 more potentially affected by CVE-2026-27795 via @langchain/community (>=1.0.0, <=1.1.16)

@langchain/community NPM version =1.0.0, =1.9.7, =1.71.0, =1.1.0, =1.12.76, =0.0.1, =0.1.0, =0.2.0, =0.20.0, =0.21.0, =0.0.16, =1.4.13, =1.0.1, =1.0.24, =1.0.26 and more Source cves: CVE-2026-27795 Source advisory: SNYK:JS-LANGCHAINCOMMUNITY-15354988...

@cognigy/cognigy-cli (>=1.9.7, <=2.2.7), @forestadmin/agent (>=1.71.0, <=1.72.9) +29 more potentially affected by CVE-2026-27795 via @langchain/community (>=1.0.0, <=1.1.16)

@langchain/community NPM version =1.0.0, =1.9.7, =1.71.0, =1.1.0, =1.12.76, =0.0.1, =0.1.0, =0.2.0, =0.20.0, =0.21.0, =0.0.16, =1.4.13, =1.0.1, =1.0.24, =1.0.26 and more Source cves: CVE-2026-27795 Source advisory: OSV:GHSA-MPHV-75CG-56WG...

LangChain Community: redirect chaining can lead to SSRF bypass via RecursiveUrlLoader

Summary 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 metada...

GHSA-MPHV-75CG-56WG LangChain Community: redirect chaining can lead to SSRF bypass via RecursiveUrlLoader

Summary 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 metada...

CVE-2026-27795

CVE-2026-27795 concerns the LangChain JS community loader (RecursiveUrlLoader in @langchain/community). Prior to version 1.1.8, it could bypass SSRF protections by allowing automatic redirects after validating the initial URL, enabling a transition from a safe public URL to an internal/metadata e...

CVE-2026-27795 LangChain Community: redirect chaining can lead to SSRF bypass via RecursiveUrlLoader

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...

CVE-2026-27795 LangChain Community: redirect chaining can lead to SSRF bypass via RecursiveUrlLoader

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...

Server-side Request Forgery (SSRF)

Overview @langchain/community is a Third-party integrations for LangChain.js Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the RecursiveUrlLoader class. An attacker can access internal or sensitive resources by influencing crawled page content to include...

@cognigy/cognigy-cli (>=1.9.7, <=2.1.0), @forestadmin/agent (>=1.71.0, <=1.72.9) +13 more potentially affected by CVE-2026-26019 via @langchain/community (>=1.0.0, <=1.1.12)

@langchain/community NPM version =1.0.0, =1.9.7, =1.71.0, =1.1.0, =1.12.76, =0.0.1, =0.2.0, =0.0.16, =1.4.13, =1.0.24, =1.0.0, =3.1.0, =0.3.0, =0.0.210, =0.1.1, =0.1.2 Source cves: CVE-2026-26019 Source advisory: SNYK:JS-LANGCHAINCOMMUNITY-15268428...

CVE-2026-26019 @langchain/community affected by SSRF Bypass in RecursiveUrlLoader via insufficient URL origin validation

LangChain is a framework for building LLM-powered applications. Prior to 1.1.14, the RecursiveUrlLoader class in @langchain/community is a web crawler that recursively follows links from a starting URL. Its preventOutside option enabled by default is intended to restrict crawling to the same site...

@cognigy/cognigy-cli (>=1.9.7, <=2.1.0), @forestadmin/agent (>=1.71.0, <=1.72.9) +13 more potentially affected by CVE-2026-26019 +1 more via @langchain/community (>=1.0.0, <=1.1.12)

@langchain/community NPM version =1.0.0, =1.9.7, =1.71.0, =1.1.0, =1.12.76, =0.0.1, =0.2.0, =0.0.16, =1.4.13, =1.0.24, =1.0.0, =3.1.0, =0.3.0, =0.0.210, =0.1.1, =0.1.2 Source cves: CVE-2026-26019, CVE-2026-27795 Source advisory: OSV:GHSA-GF3V-FWQG-4VH7...

XML External Entity (XXE)

langchaincommunity is vulnerable to XML External Entity XXE. The vulnerability is due to insecure XML parsing in the EverNoteLoader component that uses etree.iterparse without disabling external entity references, which allows an attacker to craft a malicious XML payload to access sensitive local...