{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54781", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-15T23:23:57.714Z", "datePublished": "2026-07-08T22:19:40.784Z", "dateUpdated": "2026-07-08T22:19:40.784Z"}, "containers": {"cna": {"title": "CoreWCF: SAML SubjectConfirmation methods and holder-of-key proof keys are not enforced", "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "lang": "en", "description": "CWE-287: Improper Authentication", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-345", "lang": "en", "description": "CWE-345: Insufficient Verification of Data Authenticity", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-48pq-2xq3-c2m4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-48pq-2xq3-c2m4"}, {"name": "https://github.com/CoreWCF/CoreWCF/commit/6a99df3242f54acd6f89edfd6050430b72d0c685", "tags": ["x_refsource_MISC"], "url": "https://github.com/CoreWCF/CoreWCF/commit/6a99df3242f54acd6f89edfd6050430b72d0c685"}, {"name": "https://github.com/CoreWCF/CoreWCF/commit/86dd3232b6b8aaf32281be9e8d798afad6145d58", "tags": ["x_refsource_MISC"], "url": "https://github.com/CoreWCF/CoreWCF/commit/86dd3232b6b8aaf32281be9e8d798afad6145d58"}, {"name": "https://github.com/CoreWCF/CoreWCF/commit/9eb9b46d1c2af06fb71f656a02f4d5b4649c1f03", "tags": ["x_refsource_MISC"], "url": "https://github.com/CoreWCF/CoreWCF/commit/9eb9b46d1c2af06fb71f656a02f4d5b4649c1f03"}, {"name": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1"}, {"name": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1"}], "affected": [{"vendor": "CoreWCF", "product": "CoreWCF", "versions": [{"version": ">= 1.9.0, < 1.9.1", "status": "affected"}, {"version": "< 1.8.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-08T22:19:40.784Z"}, "descriptions": [{"lang": "en", "value": "CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF SAML token validation does not enforce SubjectConfirmation method URIs or holder-of-key proof keys in SamlSecurityTokenHandler, allowing holder-of-key downgrade or custom confirmation method assertions to authenticate a subject without proving authority over the assertion. This issue is fixed in versions 1.8.1 and 1.9.1."}], "source": {"advisory": "GHSA-48pq-2xq3-c2m4", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.9.0,1.9.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.8.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "CoreWCF", "source": "cna", "vendor": "CoreWCF"}, "product": "corewcf", "vendor": "corewcf"}], "created": "2026-07-08T23:30:10.213783+00:00", "updated": "2026-07-09T03:45:03.864851+00:00", "vendors": ["corewcf", "corewcf$PRODUCT$corewcf"]}