CVE-2026-54779

MEDIUM5.9

CoreWCF: SAML token replay protection is inoperative

Published Jul 8, 2026

Modified 1 months ago

Details

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 SAML token replay protection is inoperative because DefaultTokenReplayCache.TryAdd does not reject duplicate tokens when DetectReplayedTokens is enabled, allowing a captured token to be reused. This issue is fixed in versions 1.8.1 and 1.9.1.

References

WEB

https://github.com/CoreWCF/CoreWCF/commit/3800c4e2bb4c6fde00ddacefdc2221ef33d55621

WEB

https://github.com/CoreWCF/CoreWCF/commit/7b0b5231cf21b4b5c1fc3caac9981f8bee43823f

WEB

https://github.com/CoreWCF/CoreWCF/commit/84f8cff5a786b5aaa73448cb379d366a7df98238

WEB

https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1

WEB

https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1

WEB