{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-54776", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-15T23:23:57.713Z", "datePublished": "2026-07-08T22:04:39.200Z", "dateUpdated": "2026-07-08T22:04:39.200Z"}, "containers": {"cna": {"title": "CoreWCF: Unix Domain Socket PosixIdentity transport accepts connections that skip the security upgrade", "problemTypes": [{"descriptions": [{"cweId": "CWE-306", "lang": "en", "description": "CWE-306: Missing Authentication for Critical Function", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-wjpq-6766-7f5j", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-wjpq-6766-7f5j"}, {"name": "https://github.com/CoreWCF/CoreWCF/commit/994431268e3362c0cd126450fe2a135c202551f3", "tags": ["x_refsource_MISC"], "url": "https://github.com/CoreWCF/CoreWCF/commit/994431268e3362c0cd126450fe2a135c202551f3"}, {"name": "https://github.com/CoreWCF/CoreWCF/commit/9af16955e51a57348dafce0019e259a092ef7440", "tags": ["x_refsource_MISC"], "url": "https://github.com/CoreWCF/CoreWCF/commit/9af16955e51a57348dafce0019e259a092ef7440"}, {"name": "https://github.com/CoreWCF/CoreWCF/commit/f2f1a05927a88b8a75fa0582fa8ed75eb891e463", "tags": ["x_refsource_MISC"], "url": "https://github.com/CoreWCF/CoreWCF/commit/f2f1a05927a88b8a75fa0582fa8ed75eb891e463"}, {"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": "2026-07-08T22:04:39.200Z"}, "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, a CoreWCF service hosted on Unix Domain Sockets with PosixIdentity client credentials can accept connections that skip the application/unixposix stream upgrade before dispatching messages, bypassing framing-layer identity checks in UnixPosixIdentitySecurityUpgradeProvider. This issue is fixed in versions 1.8.1 and 1.9.1."}], "source": {"advisory": "GHSA-wjpq-6766-7f5j", "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": "2026-07-08T23:30:10.215137+00:00", "updated": "2026-07-08T23:30:10.215156+00:00", "vendors": ["corewcf", "corewcf$PRODUCT$corewcf"]}