FKIE_CVE-2026-54773

Vulnerability from fkie_nvd - Published: 2026-07-08 23:16 - Updated: 2026-07-09 16:29
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/CoreWCF/CoreWCF/commit/0589692d4b9a41d21b34ac48281e95f6df7f4ce5
security-advisories@github.comhttps://github.com/CoreWCF/CoreWCF/commit/30aef805270976c42477e3f2a05f4e563d86e247
security-advisories@github.comhttps://github.com/CoreWCF/CoreWCF/commit/4618f24165ad018ad3ed2636bf8c3bc87d2a3be2
security-advisories@github.comhttps://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1
security-advisories@github.comhttps://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1
security-advisories@github.comhttps://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-jc6x-rj79-w4mx
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "CoreWCF",
          "vendor": "CoreWCF",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.9.0, \u003c 1.9.1"
            },
            {
              "status": "affected",
              "version": "\u003c 1.8.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "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 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",
  "lastModified": "2026-07-09T16:29:14.203",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-08T23:16:54.960",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/CoreWCF/CoreWCF/commit/0589692d4b9a41d21b34ac48281e95f6df7f4ce5"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/CoreWCF/CoreWCF/commit/30aef805270976c42477e3f2a05f4e563d86e247"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/CoreWCF/CoreWCF/commit/4618f24165ad018ad3ed2636bf8c3bc87d2a3be2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-jc6x-rj79-w4mx"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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