# CVE-2025-6853: PYSEC-2026-1513 - Langchain-Chatchat has a Path Traversal vulnerability

Source: https://junglewise.ai/threats/cve-2025-6853-langchain-chatchat-has-a-path-traversal-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-07  
License: CC BY 4.0 with a link back

CVE-2025-6853 · Severity: low · CVSS 3.1 · Published 2026-07-07

Langchain-Chatchat has a Path Traversal vulnerability

Technologies: [langchain-chatchat (PyPI)](https://junglewise.ai/threats/technologies/pypi-langchain-chatchat). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2025-6853 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-6853 being exploited in the wild.

**How severe is CVE-2025-6853?** Low severity, with a CVSS score of 3.1, published 7 July 2026.

**Which products and versions are affected?** langchain-chatchat (PyPI) ECOSYSTEM:introduced=0,last_affected=0.3.1.3.

**Is there a fix for CVE-2025-6853?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-6853?** Check whether you run langchain-chatchat (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- langchain-chatchat (PyPI) ECOSYSTEM:introduced=0,last_affected=0.3.1.3

## Identifiers

- CVE-2025-6853
- GHSA-qmgv-j263-qr33
- PYSEC-2026-1513

## Related threats

- [PYSEC-2026-1512 - Langchain-Chatchat vulnerable to path traversal](https://junglewise.ai/threats/cve-2025-6855-langchain-chatchat-vulnerable-to-path-traversal)
- [PYSEC-2026-1511 - Langchain-Chatchat vulnerable to path traversal](https://junglewise.ai/threats/cve-2025-6854-langchain-chatchat-vulnerable-to-path-traversal)
- [chatchat-space Langchain-Chatchat predictable file identifiers in OpenAI routes](https://junglewise.ai/threats/cve-2026-7847-chatchat-space-langchain-chatchat-predictable-file-identifiers-in)
- [chatchat-space Langchain-Chatchat TOCTOU in File Upload API](https://junglewise.ai/threats/cve-2026-7846-chatchat-space-langchain-chatchat-toctou-in-file-upload-api)
- [chatchat-space Langchain-Chatchat weak hash in Vision Chat Paste Image Handler](https://junglewise.ai/threats/cve-2026-7845-chatchat-space-langchain-chatchat-weak-hash-in-vision-chat-paste)