{"id":"CVE-2025-6855","aliases":["GHSA-f823-phmg-x5fr","PYSEC-2026-1512"],"url":"https://o3.security/vulnerability/CVE-2025-6855","summary":"chatchat-space Langchain-Chatchat file path traversal","details":"A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.","published":"2025-06-29T09:00:15.325Z","modified":"2026-08-07T11:50:25.286981226Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"langchain-chatchat","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6855.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6855"},{"type":"ADVISORY","url":"https://vuldb.com/?id.314327"},{"type":"ADVISORY","url":"https://vuldb.com/?submit.601162"},{"type":"REPORT","url":"https://github.com/chatchat-space/Langchain-Chatchat/issues/5354"},{"type":"REPORT","url":"https://vuldb.com/?ctiid.314327"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:50:25.286981226Z"}}