Headroom vulnerable to Cross-Site WebSocket Hijacking (CSWSH)

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

Headroom compresses data before the data reaches a large language model. Prior to version 0.35.0, the Headroom WebSocket server does not validate the `Origin` header of incoming client WebSocket requests before forwarding the request to the upstream server, allowing malicious WebSocket clients to perform arbitrary LLM requests without authentication. This can be exploited by a malicious WebSocket client executed in a traditional or headless browser such as lightpanda, if the browser has access to the Headroom proxy and the OpenAI API key is stored in the `OPENAI_API_KEY` environment variable. Version 0.35.0 fixes the issue.

[ Fixes ]Fixes and patches

• headroom-ai 0.35.0Fixed version · GitHub Advisories · pip package headroom-ai: upgrade to 0.35.0 or later (affected < 0.35.0)

[ Packages ]Affected open-source packages

• headroom-ai pipAffected < 0.35.0 · fixed in 0.35.0 · GHSA-h46j-26q3-rggf

[ References ]References

• github.com/headroomlabs-ai/headroom/security/advisories/GHSA-h46j-26q3-rggfx_refsource_CONFIRM
• github.com/headroomlabs-ai/headroom/releases/tag/v0.35.0x_refsource_MISC