CVE-2025-6855: A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This
Summary
CVE-2025-6855 is a critical vulnerability in Langchain-Chatchat (a tool built on LLMs) up to version 0.3.1 that allows path traversal (accessing files outside the intended directory) through manipulation of a parameter called 'flag' in the /v1/file endpoint. The vulnerability has been publicly disclosed and could potentially be exploited.
Vulnerability Details
5.5(medium)
EPSS: 0.1%
Classification
Affected Vendors
Related Issues
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Original source: https://nvd.nist.gov/vuln/detail/CVE-2025-6855
First tracked: February 15, 2026 at 08:35 PM
Classified by LLM (prompt v3) · confidence: 85%