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CVE-2026-54780 (GCVE-0-2026-54780)

Vulnerability from cvelistv5 – Published: 2026-07-08 22:15 – Updated: 2026-07-09 19:21
VLAI
Title
CoreWCF: WS-Security Reference DigestMethod Algorithm-Suite Bypass
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, 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.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 19:21 UTC
CWE
  • CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
  • CWE-757 - Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')
Assigner
References
Impacted products
Vendor Product Version CPE status
CoreWCF CoreWCF Affected: >= 1.9.0, < 1.9.1
Affected: < 1.8.1
guessed Create a notification for this product.
Show details on NVD website
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