{"id":"CVE-2026-71416","summary":"Headroom vulnerable to Cross-Site WebSocket Hijacking (CSWSH)","details":"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.","aliases":["GHSA-h46j-26q3-rggf"],"modified":"2026-09-13T03:46:13.462921755Z","published":"2026-09-11T13:34:38.794Z","database_specific":{"cwe_ids":["CWE-1385","CWE-287"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71416.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/headroomlabs-ai/headroom/releases/tag/v0.35.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71416.json"},{"type":"ADVISORY","url":"https://github.com/headroomlabs-ai/headroom/security/advisories/GHSA-h46j-26q3-rggf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-71416"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/headroomlabs-ai/headroom","events":[{"introduced":"0"},{"fixed":"93f2d7a2da4d3b6c88f31bad164ae299cf042104"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.35.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v0.34.0","v0.33.0","v0.32.0","v0.31.0","v0.30.0","v0.29.0","v0.28.0","v0.27.0","v0.26.0","v0.25.0","v0.24.0","v0.23.0","v0.22.3","v0.22.2","v0.22.1","v0.22.0","v0.21.38","v0.21.37","v0.21.36","v0.21.35","v0.21.33","v0.21.34","v0.21.32","v0.21.31","v0.21.30","v0.21.29","v0.21.28","v0.21.27","v0.21.26","v0.21.25","v0.21.22","v0.21.24","v0.21.20","v0.21.23","v0.21.21","v0.21.17","v0.21.19","v0.21.18","v0.21.16","v0.21.15","v0.21.14","v0.21.13","v0.21.12","v0.21.11","v0.21.10","v0.21.9","v0.21.8","v0.21.7","v0.21.6","v0.21.5","v0.21.4","v0.21.3","v0.21.2","v0.21.1","v0.21.0","v0.20.27","v0.20.26","v0.20.25","v0.20.24","v0.20.23","v0.20.22","v0.20.21","v0.20.20","v0.20.19","v0.20.18","v0.20.17","v0.20.16","v0.20.15","v0.20.14","v0.20.13","v0.20.12","v0.20.11","v0.20.10","v0.20.9","v0.20.8","v0.20.7","v0.20.6","v0.20.5","v0.20.4","v0.20.3","v0.20.2","v0.20.1","v0.20.0","v0.19.0","v0.18.2","v0.18.0","v0.18.1","v0.17.0","v0.16.0","v0.15.1","v0.15.0","v0.14.5","v0.14.4","v0.14.3","v0.14.2","v0.10.17","v0.14.1","v0.13.5","v0.14.0","v0.13.8","v0.13.7","v0.13.6","v0.13.4","v0.13.3","v0.13.2","v0.13.1","v0.13.0","v0.12.0","v0.11.0","v0.10.19","v0.10.18","v0.10.16","v0.10.15","v0.10.14","v0.10.13","v0.10.12","v0.10.11","v0.10.10","v0.10.9","v0.10.3","v0.10.8","v0.9.7","v0.10.7","v0.10.6","v0.10.5","v0.10.4","v0.10.2","v0.10.1","v0.10.0","v0.9.6","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.8.3","v0.9.1","v0.9.0","v0.8.2","v0.8.1","v0.8.0","v0.7.1","v0.7.4","v0.7.3","v0.7.2","v0.7.0","v0.6.7","v0.6.6","v0.6.5","v0.6.4","v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.5.28","v0.5.27","v0.5.26","v0.5.20","v0.5.2","v0.3.7","v0.3.0","v0.2.15"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71416.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}