CVE-2025-6855: Chatchat-Space Langchain-Chatchat

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Chatchat-Space Langchain-Chatchat: up to and including 0.3.1

Published 2025-06-29. Last modified 2026-06-17.