{"cve":"CVE-2026-71416","nvd":{"published":"2026-09-11T14:17:32.390","modified":"2026-09-30T19:57:08.043","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-287","CWE-1385"],"references":["https://github.com/headroomlabs-ai/headroom/releases/tag/v0.35.0","https://github.com/headroomlabs-ai/headroom/security/advisories/GHSA-h46j-26q3-rggf","https://github.com/headroomlabs-ai/headroom/security/advisories/GHSA-h46j-26q3-rggf"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:52:53.108888569+00:00"},"epss":{"cve":"CVE-2026-71416","score":0.00174,"percentile":0.06775,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-h46j-26q3-rggf","url":"https://osv.dev/vulnerability/GHSA-h46j-26q3-rggf","summary":"Headroom vulnerable to Cross-Site WebSocket Hijacking (CSWSH)","modified":"2026-10-15T14:55:37.821490146Z","packages":[{"ecosystem":"PyPI","name":"headroom-ai","purl":"pkg:pypi/headroom-ai","ranges":["<0.35.0"],"fixed":["0.35.0"]}]},{"id":"PYSEC-2026-4220","url":"https://osv.dev/vulnerability/PYSEC-2026-4220","summary":"Headroom vulnerable to Cross-Site WebSocket Hijacking (CSWSH)","modified":"2026-10-15T14:45:04.405810362Z","packages":[{"ecosystem":"PyPI","name":"headroom-ai","purl":"pkg:pypi/headroom-ai","ranges":["<0.35.0"],"fixed":["0.35.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}