{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-71416","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-06T16:28:51.181Z","datePublished":"2026-09-11T13:34:38.794Z","dateUpdated":"2026-09-11T14:33:18.586Z"},"containers":{"cna":{"title":"Headroom vulnerable to Cross-Site WebSocket Hijacking (CSWSH)","problemTypes":[{"descriptions":[{"cweId":"CWE-287","lang":"en","description":"CWE-287: Improper Authentication","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-1385","lang":"en","description":"CWE-1385: Missing Origin Validation in WebSockets","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/headroomlabs-ai/headroom/security/advisories/GHSA-h46j-26q3-rggf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/headroomlabs-ai/headroom/security/advisories/GHSA-h46j-26q3-rggf"},{"name":"https://github.com/headroomlabs-ai/headroom/releases/tag/v0.35.0","tags":["x_refsource_MISC"],"url":"https://github.com/headroomlabs-ai/headroom/releases/tag/v0.35.0"}],"affected":[{"vendor":"headroomlabs-ai","product":"headroom","versions":[{"version":"< 0.35.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-11T13:34:38.794Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-h46j-26q3-rggf","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/headroomlabs-ai/headroom/security/advisories/GHSA-h46j-26q3-rggf","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-11T14:31:54.198576Z","id":"CVE-2026-71416","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-11T14:33:18.586Z"}}]}}