{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "1.9.0"
              },
              {
                "fixed": "1.9.1"
              },
              {
                "introduced": "0"
              },
              {
                "fixed": "1.8.1"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "39b2f02978e497955a560c72b5ccdff5c0dbcda1"
            },
            {
              "introduced": "0"
            },
            {
              "fixed": "1f7a0811da5128db40fd7b868ae0aac0c581f91f"
            },
            {
              "fixed": "7c0920fe16adc497efae82881ac0f1e4d7ac98d0"
            },
            {
              "fixed": "0589692d4b9a41d21b34ac48281e95f6df7f4ce5"
            },
            {
              "fixed": "30aef805270976c42477e3f2a05f4e563d86e247"
            },
            {
              "fixed": "4618f24165ad018ad3ed2636bf8c3bc87d2a3be2"
            }
          ],
          "repo": "https://github.com/corewcf/corewcf",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jc6x-rj79-w4mx"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54773.json"
  },
  "details": "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 WS-Security signature verification performs a document-wide ds:Signature lookup, allowing an unauthenticated remote attacker to place a SOAP header before wsse:Security and cause WSSecurityOneDotZeroReceiveSecurityHeader to verify an attacker-supplied signature instead of the security header signature. This issue is fixed in versions 1.8.1 and 1.9.1.",
  "id": "CVE-2026-54773",
  "modified": "2026-07-15T01:48:55.536189041Z",
  "published": "2026-07-08T22:09:32.584Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54773.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-jc6x-rj79-w4mx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54773"
    },
    {
      "type": "FIX",
      "url": "https://github.com/CoreWCF/CoreWCF/commit/0589692d4b9a41d21b34ac48281e95f6df7f4ce5"
    },
    {
      "type": "FIX",
      "url": "https://github.com/CoreWCF/CoreWCF/commit/30aef805270976c42477e3f2a05f4e563d86e247"
    },
    {
      "type": "FIX",
      "url": "https://github.com/CoreWCF/CoreWCF/commit/4618f24165ad018ad3ed2636bf8c3bc87d2a3be2"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CoreWCF: WS-Security signature substitution via document-wide Signature lookup"
}