CVE-2026-82465

pac4j-saml before 6.5.6 does not require signature validation of SAML LogoutRequest messages in SAML2LogoutValidator.validateLogoutRequest. When an IdP sends no SessionIndex, a session can be destroyed based solely on the NameID, allowing an unauthenticated attacker to submit an unsigned...

GO-2026-4764 Unsigned SAML LogoutRequest Acceptance in gosaml2 in github.com/russellhaering/gosaml2

Unsigned SAML LogoutRequest Acceptance in gosaml2 in github.com/russellhaering/gosaml2...

GHSA-PCGW-QCV5-H8CH Unsigned SAML LogoutRequest Acceptance in gosaml2

Summary The ValidateEncodedLogoutRequestPOST function in gosaml2 accepts completely unsigned SAML LogoutRequest messages even when SkipSignatureValidation is set to false. When validateElementSignature returns dsig.ErrMissingSignature, the code in decodelogoutrequest.go:60-62 silently falls throu...