CVE-2025-27773

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{"affected": [{"affectedData": [{"product": "saml2", "vendor": "simplesamlphp", "versions": [{"status": "affected", "version": "< 4.17.0"}, {"status": "affected", "version": ">= 5.0.0-alpha.1, < 5.0.0-alpha.20"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. Prior to versions 4.17.0 and 5.0.0-alpha.20, there is a signature confusion attack in the HTTPRedirect binding. An attacker with any signed SAMLResponse via the HTTP-Redirect binding can cause the application to accept an unsigned message. Versions 4.17.0 and 5.0.0-alpha.20 contain a fix for the issue."}, {"lang": "es", "value": "La librer\u00eda SimpleSAMLphp SAML2 es una librer\u00eda PHP para funcionalidades relacionadas con SAML2. En versiones anteriores a la 4.17.0 y la 5.0.0-alpha.20, exist\u00eda un ataque de confusi\u00f3n de firmas en el enlace HTTPRedirect. Un atacante con cualquier SAMLResponse firmada mediante el enlace HTTP-Redirect pod\u00eda provocar que la aplicaci\u00f3n aceptara un mensaje sin firmar. Las versiones 4.17.0 y 5.0.0-alpha.20 incluyen una soluci\u00f3n para este problema."}], "id": "CVE-2025-27773", "lastModified": "2026-06-17T09:04:11.953", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-27773", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-03-11T19:26:31.017558Z", "version": "2.0.3"}}]}, "published": "2025-03-11T19:15:43.677", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/simplesamlphp/saml2/blob/9545abd0d9d48388f2fa00469c5c1e0294f0303e/src/SAML2/HTTPRedirect.php#L104-L113"}, {"source": "security-advisories@github.com", "url": "https://github.com/simplesamlphp/saml2/blob/9545abd0d9d48388f2fa00469c5c1e0294f0303e/src/SAML2/HTTPRedirect.php#L178-L217"}, {"source": "security-advisories@github.com", "url": "https://github.com/simplesamlphp/saml2/commit/7867d6099dc7f31bed1ea10e5bea159c5623d2a0"}, {"source": "security-advisories@github.com", "url": "https://github.com/simplesamlphp/saml2/security/advisories/GHSA-46r4-f8gj-xg56"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00013.html"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"created": "2025-07-12T15:26:09.768055+00:00", "updated": "2025-07-12T15:26:09.768134+00:00", "vendors": ["simplesamlphp", "simplesamlphp$PRODUCT$saml2"]}