{"action":"Upgrade langchain-core to 0.3.81 or later.","affected":[{"fixed":"0.3.81","introduced":"0"},{"fixed":"1.2.5","introduced":"1.0.0"}],"component":"langchain-core","cve_ids":["CVE-2025-68664"],"ecosystem":"PyPI","epss":0.4293,"exploited":false,"fixed_versions":["0.3.81","1.2.5"],"ghsa_id":"GHSA-c67j-w6g6-q2cm","id":"tcs_01M5KH70CSCEJNFJ2PZQ34GRR5","modified_at":"2026-07-02T13:00:05.018724776Z","published_at":"2026-06-29T11:50:38.732432Z","references":["https://osv.dev/vulnerability/PYSEC-2026-373","https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm","https://nvd.nist.gov/vuln/detail/CVE-2025-68664","https://github.com/langchain-ai/langchain/pull/34455","https://github.com/langchain-ai/langchain/pull/34458","https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8","https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6","https://github.com/langchain-ai/langchain","https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81","https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5","https://pypi.org/project/langchain-core","https://github.com/advisories/GHSA-c67j-w6g6-q2cm"],"severity":{"label":"critical","score":9.3},"sources":[{"source":"osv","source_id":"PYSEC-2026-373","url":"https://osv.dev/vulnerability/PYSEC-2026-373"}],"summary":"LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs"}