CVE-2026-51882: The OpenAI-compatible file upload endpoint `/v1/files` in Langchain-Chatchat 0.3.0 is vulnerable to path traversal. An…

Summary

CVE-2026-51882 affects the OpenAI-compatible file upload endpoint `/v1/files` in Langchain-Chatchat 0.3.0. The endpoint is vulnerable to path traversal, so an attacker can craft malicious filenames to write files to arbitrary locations outside the `openai_files` directory.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

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