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CVE-2026-54773

MEDIUM
5.9
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-54773
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-15 23:23 UTC
Published
2026-07-08 22:09 UTC
Last updated
2026-07-08 22:10 UTC
Primary CWE
CWE-347
CWE-347: Improper Verification of Cryptographic Signature
Vendor / Product
CoreWCF / CoreWCF
Sources
cve.org  ·  NVD

Severity & Metrics

5.9 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected products (1)
VendorProductPlatformVersions
CoreWCF CoreWCF — >= 1.9.0, < 1.9.1, < 1.8.1
Weakness (CWE)
CWESourceDescription
CWE-347 cna CWE-347: Improper Verification of Cryptographic Signature
CVSS scores (1)
ScoreSeverityVersionSourceVector
5.9 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
References (6)
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