CVE-2026-54774: Improper Saml Signature Verification

The application verifies only the `SignedInfo` (digest) of an XML/SAML signature instead of verifying the complete cryptographic `SignatureValue`. This allows an attacker to forge tokens and bypass cryptographic signature verification. Ensure the full signature is verified using `$SIG.Verify(...)`.

Provally CuratedPublic repositoryHighMedium confidenceVerifiedApache-2.0C#
greprules fetch cve-2026-54774-improper-saml-signature-verification --engine opengrep

Description

The application verifies only the `SignedInfo` (digest) of an XML/SAML signature instead of verifying the complete cryptographic `SignatureValue`. This allows an attacker to forge tokens and bypass cryptographic signature verification. Ensure the full signature is verified using `$SIG.Verify(...)`.