Cyber Resilience

CVE-2025-6855

LowPublic PoC

Published: 29 June 2025

Published
29 June 2025
Modified
29 April 2026
KEV Added
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Patch
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CVSS Score v4 2.0 CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0069 72.2th percentile
Risk Priority 4 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-6855 is a low-severity Path Traversal (CWE-22) vulnerability in Chatchat-Space Langchain-Chatchat. Its CVSS base score is 2.0 (Low).

Operationally, ranked in the top 27.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

This vulnerability is AI-related — categorised as NLP and Transformers; in the Privacy and Disclosure risk domain.

EU & UK References

Vulnerability 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…

more

disclosed to the public and may be used.

CWE(s)
CWE-22

AI Security AnalysisAI

AI Category
NLP and Transformers
Risk Domain
Privacy and Disclosure
OWASP Top 10 for LLMs 2025
None mapped
Classification Reason
Matched keywords: langchain

Related Threats

Affected Assets

chatchat-space
langchain-chatchat
≤ 0.3.1

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-10 Information Input Validation
addresses: CWE-22

Validates pathnames and filenames to prevent traversal outside intended directories.

References