{"action":"Upgrade langchain to 0.3.30 or later.","affected":[{"fixed":"0.3.30","introduced":"0"}],"component":"langchain","cve_ids":["CVE-2026-45134"],"ecosystem":"PyPI","epss":0.00199,"exploited":false,"fixed_versions":["0.3.30"],"ghsa_id":"GHSA-3644-q5cj-c5c7","id":"tcs_01M5KEV05RD2BEA54FAATCKTY3","modified_at":"2026-09-10T03:51:04.416695616Z","published_at":"2026-05-13T15:29:30Z","references":["https://osv.dev/vulnerability/GHSA-3644-q5cj-c5c7","https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-3644-q5cj-c5c7","https://nvd.nist.gov/vuln/detail/CVE-2026-45134","https://github.com/langchain-ai/langsmith-sdk"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"GHSA-3644-q5cj-c5c7#PyPI/langchain","url":"https://osv.dev/vulnerability/GHSA-3644-q5cj-c5c7"}],"summary":"LangSmith SDK: Public prompt pull deserializes untrusted manifests without trust boundary warning"}