CVE-2025-6855

Name: CVE-2025-6855
Creator: NVD / NIST
Published: 2025-06-29T09:15:24.29+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2025-6855 is a low-severity vulnerability rated 2/10 on the CVSS scale. 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. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0

2/10

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 Probability

0.55%

41.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Chatchat-Space	Langchain-Chatchat	<= 0.3.1

References

https://github.com/chatchat-space/Langchain-Chatchat/issues/5354Exploit, Issue Tracking, Vendor Advisory
https://vuldb.com/?ctiid.314327Permissions Required, VDB Entry
https://vuldb.com/?id.314327Third Party Advisory, VDB Entry
https://vuldb.com/?submit.601162Third Party Advisory, VDB Entry

Timeline

Published: Jun 29, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-6855?

How severe is CVE-2025-6855?

CVE-2025-6855 has a CVSS score of 2/10 (LOW severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2025-6855?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-6855?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST