CVE-2026-54780
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, the CoreWCF WS-Security 1.0 receive pipeline validates ds:SignedInfo SignatureMethod against the configured SecurityAlgorithmSuite but does not validate each ds:Reference DigestMethod, allowing a sender to use a rejected digest algorithm such as SHA-1 while the message is still accepted. This issue is fixed in versions 1.8.1 and 1.9.1.
Scoring
- Severity
- LOW
- CVSS base score
- 3.7
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS probability
- 0.24%
- CWE
- CWE-327, CWE-757
- Published
- 2026-07-08
- Last modified
- 2026-07-10
Affected products
- CoreWCF CoreWCF
- CoreWCF CoreWCF
Weakness type
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