GHSA-JC38-X7X8-2XC8 PHP JWT Framework: JWSVerifier uses algorithm from unprotected header, enabling algorithm confusion attacks

Summary JWSVerifier::getAlgorithm in src/Library/Signature/JWSVerifier.php line 144 merges protected and unprotected headers using PHP's spread operator: php $completeHeader = ...$signature-getProtectedHeader, ...$signature-getHeader; In PHP, when spreading arrays with duplicate string keys, the...

PT-2026-53185

Summary JWSVerifier::getAlgorithm in src/Library/Signature/JWSVerifier.php line 144 merges protected and unprotected headers using PHP's spread operator: php $completeHeader = ...$signature-getProtectedHeader, ...$signature-getHeader; In PHP, when spreading arrays with duplicate string keys, the...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via header merging in JWSVerifier::getAlgorithm and JWEDecrypter. An attacker can bypass protected header validation by placing conflicting alg or enc values in unprotected headers, which...