{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-40910", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-15T16:37:22.767Z", "datePublished": "2026-04-21T20:09:00.893Z", "dateUpdated": "2026-04-21T20:28:48.579Z"}, "containers": {"cna": {"title": "frp: Authentication bypass in frp HTTP vhost routing when routeByHTTPUser is used for access control", "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "lang": "en", "description": "CWE-287: Improper Authentication", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/fatedier/frp/security/advisories/GHSA-pq96-pwvg-vrr9", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/fatedier/frp/security/advisories/GHSA-pq96-pwvg-vrr9"}], "affected": [{"vendor": "fatedier", "product": "frp", "versions": [{"version": "< 0.68.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-21T20:09:00.893Z"}, "descriptions": [{"lang": "en", "value": "frp is a fast reverse proxy. From 0.43.0 to 0.68.0, frp contains an authentication bypass in the HTTP vhost routing path when routeByHTTPUser is used as part of access control. In proxy-style requests, the routing logic uses the username from Proxy-Authorization to select the routeByHTTPUser backend, while the access control check uses credentials from the regular Authorization header. As a result, an attacker who can reach the HTTP vhost entrypoint and knows or can guess the protected routeByHTTPUser value may access a backend protected by httpUser / httpPassword even with an incorrect Proxy-Authorization password. This issue affects deployments that explicitly use routeByHTTPUser. It does not affect ordinary HTTP proxies that do not use this feature. This vulnerability is fixed in 0.68.1."}], "source": {"advisory": "GHSA-pq96-pwvg-vrr9", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/fatedier/frp/security/advisories/GHSA-pq96-pwvg-vrr9", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-04-21T20:28:44.365794Z", "id": "CVE-2026-40910", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-21T20:28:48.579Z"}}]}}

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