{"id":"CVE-2025-6855","aliases":["GHSA-f823-phmg-x5fr","PYSEC-2026-1512"],"title":"Langchain-Chatchat vulnerable to path traversal","summary":"Langchain-Chatchat vulnerable to path traversal","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","vendor":"langchain-chatchat","product":"langchain-chatchat","ecosystem":"pip","affected":["langchain-chatchat <= 0.3.1"],"published":"2025-06-29","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-f823-phmg-x5fr","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6855"},{"url":"https://github.com/chatchat-space/Langchain-Chatchat/issues/5354"},{"url":"https://github.com/chatchat-space/Langchain-Chatchat"},{"url":"https://vuldb.com/?ctiid.314327"},{"url":"https://vuldb.com/?id.314327"},{"url":"https://vuldb.com/?submit.601162"}],"tags":["osv","pip"],"epss":0.00624,"epssPercentile":0.48569,"ingestedAt":"2026-07-08T18:25:48.803Z","slug":"CVE-2025-6855","body":"## Overview\n\nA 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.\n\n## Affected packages\n\n- `langchain-chatchat <= 0.3.1`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}