GHSA-RPJ7-HR7H-W6P9 CoreWCF: SamlSerializer skips SignatureValue verification when SAML signing token is not an X.509 certificate

Impact When a service is configured to validate SAML tokens using a method other than X.509 certificate signing, the final signature verification is skipped. Preconditions The service is configured to authenticate using SAML tokens and an out of band token resolver commonly the IssuerTokenResolve...

GHSA-JC6X-RJ79-W4MX CoreWCF: WS-Security signature substitution via document-wide Signature lookup

Impact An unauthenticated remote attacker who can place a SOAP header lexically before wsse:Security can embed a ds:Signature of their choosing inside that header and cause the server to verify the attacker-supplied signature instead of the one carried in the security header. Preconditions...

PT-2026-51071

Name of the Vulnerable Software and Affected Versions CoreWCF versions prior to 1.8.1 CoreWCF versions prior to 1.9.1 Description The SamlSerializer skips the final SignatureValue verification when a service validates SAML tokens using a non-X.509 signing token. This occurs when the service is...

PT-2026-51070

Name of the Vulnerable Software and Affected Versions CoreWCF versions prior to 1.8.1 CoreWCF versions prior to 1.9.1 Description WS-Security signature verification performs a document-wide ds:Signature lookup. An unauthenticated remote attacker can place a SOAP header before wsse:Security and...