{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-51883", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-10-01T21:35:55.173Z", "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": "2026-10-01T21:35:55.173Z"}, "descriptions": [{"lang": "en", "value": "The knowledge base creation and document upload interfaces in Langchain-Chatchat 0.3.0;0.3.1 is vulnerable to path traversal. An attacker can inject path traversal sequences (such as `..\\`) into the `knowledge_base_name` parameter to write knowledge base content to arbitrary locations outside the configured knowledge base root directory."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5467"}, {"url": "https://gist.github.com/Ro1ME/30f5139a2920bf7075299a33eb1690f2"}], "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": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The knowledge base creation and document upload interfaces in Langchain-Chatchat 0.3.0;0.3.1 is vulnerable to path traversal. An attacker can inject path traversal sequences (such as `..\\`) into the `knowledge_base_name` parameter to write knowledge base content to arbitrary locations outside the configured knowledge base root directory."}], "id": "CVE-2026-51883", "lastModified": "2026-10-01T22:17:03.127", "metrics": {}, "published": "2026-10-01T22:17:03.127", "references": [{"source": "[email protected]", "url": "https://gist.github.com/Ro1ME/30f5139a2920bf7075299a33eb1690f2"}, {"source": "[email protected]", "url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5467"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received"}

{}

{}