{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54779",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-15T23:23:57.714Z",
        "datePublished": "2026-07-08T22:07:46.453Z",
        "dateUpdated": "2026-07-09T14:17:57.224Z"
    },
    "containers": {
        "cna": {
            "title": "CoreWCF: SAML token replay protection is inoperative",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-294",
                            "lang": "en",
                            "description": "CWE-294: Authentication Bypass by Capture-replay",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-613",
                            "lang": "en",
                            "description": "CWE-613: Insufficient Session Expiration",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.9,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-9jr3-rj99-8jq3",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-9jr3-rj99-8jq3"
                },
                {
                    "name": "https://github.com/CoreWCF/CoreWCF/commit/3800c4e2bb4c6fde00ddacefdc2221ef33d55621",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/CoreWCF/CoreWCF/commit/3800c4e2bb4c6fde00ddacefdc2221ef33d55621"
                },
                {
                    "name": "https://github.com/CoreWCF/CoreWCF/commit/7b0b5231cf21b4b5c1fc3caac9981f8bee43823f",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/CoreWCF/CoreWCF/commit/7b0b5231cf21b4b5c1fc3caac9981f8bee43823f"
                },
                {
                    "name": "https://github.com/CoreWCF/CoreWCF/commit/84f8cff5a786b5aaa73448cb379d366a7df98238",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/CoreWCF/CoreWCF/commit/84f8cff5a786b5aaa73448cb379d366a7df98238"
                },
                {
                    "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": "2026-07-08T22:07:46.453Z"
            },
            "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 replay protection is inoperative because DefaultTokenReplayCache.TryAdd does not reject duplicate tokens when DetectReplayedTokens is enabled, allowing a captured token to be reused. This issue is fixed in versions 1.8.1 and 1.9.1."
                }
            ],
            "source": {
                "advisory": "GHSA-9jr3-rj99-8jq3",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-07-09T14:17:49.549188Z",
                                "id": "CVE-2026-54779",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "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": "2026-07-09T14:17:57.224Z"
                }
            }
        ]
    }
}