{"answers":{"affected":"4 open source packages ship an affected version, including langgraph and langgraph-sdk.","exploited":"There is no known exploitation of CVE-2026-118667 in the wild and no public exploit code.","fix":"Upgrade langgraph to 1.2.14 or later.","what":"CVE-2026-118667 is a medium-severity vulnerability in langchain-ai langgraph, published on 28 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-118667 and fix it if it is affected.\n\nWhat it is: CVE-2026-118667 is a medium-severity vulnerability in langchain-ai langgraph, published on 28 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-118667 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- langgraph (PyPI): affected from 1.2.3; fixed in 1.2.14\n- langgraph (PyPI): affected from 1.2.3; fixed in 1.2.14\n- langgraph-sdk (PyPI): affected from 0.4.0; fixed in 0.4.6\n- langgraph-sdk (PyPI): affected from 0.4.0; fixed in 0.4.6\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-118667/ (Markdown: https://insights.sbomify.com/CVE-2026-118667/index.md)","id":"CVE-2026-118667","markdown":"https://insights.sbomify.com/CVE-2026-118667/index.md","name":"CVE-2026-118667","record":{"aliases":["GHSA-3fx2-cqw9-xr3c"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. From langgraph-sdk 0.4.0 until 0.4.6, and from langgraph 1.2.3 until 1.2.14 when RemoteGraph v3 streaming uses an affected langgraph-sdk version, the synchronous and asynchronous v3 stream get_tree and _fetch_state helpers interpolate caller-controlled assistant_id and thread_id values into authenticated GET request paths without using _quote_path_param. Relative path segments can therefore be normalized into another readable path on the configured server while retaining authentication headers. This issue is fixed in langgraph-sdk 0.4.6 and langgraph 1.2.14.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"LangGraph: Unencoded identifiers in LangGraph SDK v3 streaming can redirect authenticated GET requests","id":"CVE-2026-118667","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":null,"year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"LangGraph JavaScript custom authentication may permit cross-user Store access","id":"CVE-2026-118668"},"packages":[{"ecosystem":"PyPI","fixed":["1.2.14"],"introduced":["1.2.3"],"last_affected":[],"package":"langgraph","purl":null,"source":"GHSA-3fx2-cqw9-xr3c"},{"ecosystem":"PyPI","fixed":["1.2.14"],"introduced":["1.2.3"],"last_affected":[],"package":"langgraph","purl":"pkg:pypi/langgraph","source":"GHSA-3fx2-cqw9-xr3c"},{"ecosystem":"PyPI","fixed":["0.4.6"],"introduced":["0.4.0"],"last_affected":[],"package":"langgraph-sdk","purl":null,"source":"GHSA-3fx2-cqw9-xr3c"},{"ecosystem":"PyPI","fixed":["0.4.6"],"introduced":["0.4.0"],"last_affected":[],"package":"langgraph-sdk","purl":"pkg:pypi/langgraph-sdk","source":"GHSA-3fx2-cqw9-xr3c"}],"prev":{"headline":"GraphQL Tools: Shared legacy executor routes one subscription's results to a different caller","id":"CVE-2026-118666"},"products":["langgraph","langgraph-sdk"],"published":"2026-10-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["langchain-ai"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-118667/"}