{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-49284", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-28T20:07:58.861Z", "datePublished": "2026-07-17T19:17:23.897Z", "dateUpdated": "2026-07-17T19:17:23.897Z"}, "containers": {"cna": {"title": "SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData/InResponseTo`", "problemTypes": [{"descriptions": [{"cweId": "CWE-345", "lang": "en", "description": "CWE-345: Insufficient Verification of Data Authenticity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-q8r6-xj3f-wrrm", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/simplesamlphp/simplesamlphp/security/advisories/GHSA-q8r6-xj3f-wrrm"}, {"name": "https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.4.7", "tags": ["x_refsource_MISC"], "url": "https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.4.7"}, {"name": "https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.5.2", "tags": ["x_refsource_MISC"], "url": "https://github.com/simplesamlphp/simplesamlphp/releases/tag/v2.5.2"}], "affected": [{"vendor": "simplesamlphp", "product": "simplesamlphp", "versions": [{"version": "< 2.4.7", "status": "affected"}, {"version": ">= 2.5.0-rc1, < 2.5.2", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-17T19:17:23.897Z"}, "descriptions": [{"lang": "en", "value": "SimpleSAMLphp versions before 1.18.6 contain an information disclosure vulnerability. Prior to 2.4.7 and 2.5.2, SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login when unsigned Response/InResponseTo is combined with a signed assertion lacking SubjectConfirmationData/InResponseTo, allowing a response issued by one trusted IdP to be bound to SP state created for another IdP and bypass flows that route users to a specific IdP, including deployments that set enable_unsolicited to false. This issue is fixed in versions 2.4.7 and 2.5.2."}], "source": {"advisory": "GHSA-q8r6-xj3f-wrrm", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.4.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.5.0-rc1,2.5.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "simplesamlphp", "source": "cna", "vendor": "simplesamlphp"}, "product": "simplesamlphp", "vendor": "simplesamlphp"}], "created": "2026-07-17T20:30:03.682591+00:00", "updated": "2026-07-17T20:30:03.682620+00:00", "vendors": ["simplesamlphp", "simplesamlphp$PRODUCT$simplesamlphp"]}