{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "0.3.1"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "a6a9193b5002061719f0eee62c6310bd5b1b7f63"
            }
          ],
          "repo": "https://github.com/chatchat-space/langchain-chatchat",
          "type": "GIT"
        }
      ]
    }
  ],
  "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.",
  "id": "CVE-2025-6855",
  "modified": "2026-03-15T21:45:55.393243893Z",
  "published": "2025-06-29T09:15:24.290Z",
  "references": [
    {
      "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"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}