{"schema":"threatline.record/2","record":{"id":"CVE-2026-51882","aliases":[],"summary":"The OpenAI-compatible file upload endpoint `/v1/files` in Langchain-Chatchat 0.3.0 is vulnerable to path traversal. An attacker can write files to arbitrary locations outside the `openai_files` direct","details":"The OpenAI-compatible file upload endpoint `/v1/files` in Langchain-Chatchat 0.3.0 is vulnerable to path traversal. An attacker can write files to arbitrary locations outside the `openai_files` directory by crafting malicious filenames.","categories":["Unclassified"],"product":"n/a","vendor":"n/a","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-51882","source_modified_at":"2026-10-07T14:52:16.785Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"n/a","vendor":"n/a","versions":[{"version":"n/a","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":9.1,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00415,"percentile":0.34721,"score_date":"2026-10-23"},"published_at":"2026-10-01T00:00:00.000Z","modified_at":"2026-10-07T14:52:16.785Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-51882","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-07T14:52:16.785Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-51882","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/chatchat-space/Langchain-Chatchat/issues/5468","tags":["exploit"]},{"source":"CVE List","url":"https://gist.github.com/Ro1ME/f80ac458836b59adb9c6ceff3993f7f3","tags":["exploit"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"poc","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-07T14:51:37.938402Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-07T14:52:16.785Z","content_hash":"e792ad02e93b8e79d6dcdf05b904b4637554238aa4215288f2de6b84cc1d8ce0"}}