{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-51882", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-10-01T21:35:13.181Z", "dateReserved": "2026-06-08T00:00:00.000Z", "datePublished": "2026-10-01T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-10-01T21:35:13.181Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5468"}, {"url": "https://gist.github.com/Ro1ME/f80ac458836b59adb9c6ceff3993f7f3"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}, "dataVersion": "5.2"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-51882", "lastModified": "2026-10-02T18:47:49.947", "metrics": {}, "published": "2026-10-01T22:17:03.003", "references": [{"source": "cve@mitre.org", "url": "https://gist.github.com/Ro1ME/f80ac458836b59adb9c6ceff3993f7f3"}, {"source": "cve@mitre.org", "url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5468"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Deferred"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "0.3.0"}}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "langchain-chatchat", "vendor": "chatchat-space"}], "created": "2026-10-01T23:30:14.989259+00:00", "title": "Path Traversal in Langchain-Chatchat File Upload Endpoint", "updated": "2026-10-02T00:00:13.352064+00:00", "vendors": ["chatchat-space", "chatchat-space$PRODUCT$langchain-chatchat"], "weaknesses": ["CWE-22"]}