id: PYSEC-2026-1511
published: "2026-07-07T16:02:56.001354Z"
modified: "2026-07-07T17:24:27.055652Z"
aliases:
- CVE-2025-6854
- GHSA-8v8h-4pjx-rg73
summary: Langchain-Chatchat vulnerable to path traversal
details: A vulnerability classified as problematic was found in chatchat-space Langchain-Chatchat up to 0.3.1. This vulnerability affects unknown code of the file /v1/files?purpose=assistants. The manipulation leads to path traversal. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
affected:
- package:
    name: langchain-chatchat
    ecosystem: PyPI
    purl: pkg:pypi/langchain-chatchat
  ranges:
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - last_affected: 0.3.1
  versions:
  - 0.3.0
  - 0.3.0.20240506
  - 0.3.0.20240606
  - 0.3.0.20240610
  - 0.3.0.20240610.1
  - 0.3.0.20240611
  - 0.3.0.20240612
  - 0.3.0.20240612.1
  - 0.3.0.20240612.2
  - 0.3.0.20240612.3
  - 0.3.0.20240612.4
  - 0.3.0.20240616
  - 0.3.0.20240618
  - 0.3.0.20240619
  - 0.3.0.20240621
  - 0.3.0.20240621.3
  - 0.3.0.20240625
  - 0.3.0.20240625.1
  - 0.3.1
references:
- type: ADVISORY
  url: https://nvd.nist.gov/vuln/detail/CVE-2025-6854
- type: WEB
  url: https://github.com/chatchat-space/Langchain-Chatchat/issues/5353
- type: PACKAGE
  url: https://github.com/chatchat-space/Langchain-Chatchat
- type: WEB
  url: https://vuldb.com/?ctiid.314326
- type: WEB
  url: https://vuldb.com/?id.314326
- type: WEB
  url: https://vuldb.com/?submit.601161
- type: PACKAGE
  url: https://pypi.org/project/langchain-chatchat
- type: ADVISORY
  url: https://github.com/advisories/GHSA-8v8h-4pjx-rg73
severity:
- type: CVSS_V3
  score: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- type: CVSS_V4
  score: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P