Vulnerability in Corewcf

CVE-2026-54773

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 re…

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

  • Corewcf — versions >= 1.9.0, < 1.9.1, < 1.8.1

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-54773?
CVE-2026-54773 is a medium-severity vulnerability in Corewcf, classified under Improper Verification of Cryptographic Signature. CVSS score: 5.9/10. Published 2026-07-08.
How severe is CVE-2026-54773?
Medium severity. CVSS v3 base score is 5.9 out of 10.