Vulnerability · Published Jun 29, 2025 · Assigned by VulDB
CVE-2025-6855chatchat-space Langchain-Chatchat file path traversal
Medium 5.5
In plain English
A medium-severity path traversal in Langchain-Chatchat from chatchat-space. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.6%top 51.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | langchain-chatchat | no fix listed | GHSA-f823-phmg-x5fr |
| PyPI | langchain-chatchat | no fix listed | PYSEC-2026-1512 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| chatchat-space | Langchain-Chatchat | 0.3.00.3.1 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-314327 | chatchat-space Langchain-Chatchat file path traversal vdb-entry, technical-description
- VDB-314327 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #601162 | chatchat-space Langchain-Chatchat < v0.3.1 Path Traversal: '.../...//' third-party-advisory
- https://github.com/chatchat-space/Langchain-Chatchat/issues/5354 exploit, issue-tracking