{"id":"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.","aliases":["GHSA-f823-phmg-x5fr","PYSEC-2026-1512"],"modified":"2026-08-12T03:51:13.382127497Z","published":"2025-06-29T09:00:15.325Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/6xxx/CVE-2025-6855.json","cna_assigner":"VulDB","cwe_ids":["CWE-22"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chatchat-space/langchain-chatchat","events":[{"introduced":"9d8acafef8f41f5658828b5850731d121b45b38a"},{"last_affected":"a6a9193b5002061719f0eee62c6310bd5b1b7f63"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:chatchat-space:langchain-chatchat:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0.3.0"},{"last_affected":"0.3.0"},{"introduced":"0.3.1"},{"last_affected":"0.3.1"},{"introduced":"0"}]}}],"versions":["0.3.0","0.3.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-6855.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P"}]}