{"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"}}]}}

{}

{"affected": [{"affectedData": [{"product": "headroom", "vendor": "headroomlabs-ai", "versions": [{"status": "affected", "version": "< 0.35.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-71416", "lastModified": "2026-09-11T14:17:32.390", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-11T14:17:32.390", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/headroomlabs-ai/headroom/releases/tag/v0.35.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/headroomlabs-ai/headroom/security/advisories/GHSA-h46j-26q3-rggf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}, {"lang": "en", "value": "CWE-1385"}], "source": "security-advisories@github.com", "type": "Primary"}]}

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