The OpenAI-compatible file upload endpoint `/v1/files` in Langchain-Chatchat 0.3.0 is vulnerable to path traversal. An attacker can write files to arbitrary locations outside the `openai_files` directory by crafting malicious filenames.
History

Wed, 07 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Title Path Traversal in Langchain-Chatchat File Upload Endpoint

Wed, 07 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 02 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
First Time appeared Chatchat-space
Chatchat-space langchain-chatchat
Vendors & Products Chatchat-space
Chatchat-space langchain-chatchat

Thu, 01 Oct 2026 23:45:00 +0000

Type Values Removed Values Added
Title Path Traversal in Langchain-Chatchat File Upload Endpoint
Weaknesses CWE-22

Thu, 01 Oct 2026 21:45:00 +0000

Type Values Removed Values Added
Description The OpenAI-compatible file upload endpoint `/v1/files` in Langchain-Chatchat 0.3.0 is vulnerable to path traversal. An attacker can write files to arbitrary locations outside the `openai_files` directory by crafting malicious filenames.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-10-01T00:00:00.000Z

Updated: 2026-10-07T14:52:16.785Z

Reserved: 2026-06-08T00:00:00.000Z

Link: CVE-2026-51882

cve-icon Vulnrichment

Updated: 2026-10-07T14:51:22.412Z

cve-icon NVD

Status : Deferred

Published: 2026-10-01T22:17:03.003

Modified: 2026-10-07T15:17:22.240

Link: CVE-2026-51882

cve-icon Redhat

No data.