Xml Security
Monthly
Critical authentication bypass vulnerability in the simplesamlphp/xml-security library (versions before 2.3.1) that affects XML encryption using AES-GCM modes. Attackers can exploit missing authentication tag validation to brute-force decryption keys, decrypt sensitive XML data, and forge arbitrary ciphertexts without knowing encryption keys. No active exploitation detected (not in KEV), but the high CVSS score (8.2) and network-based attack vector make this a priority for organizations using affected SAML/XML security implementations.
Critical authentication bypass vulnerability in the simplesamlphp/xml-security library (versions before 2.3.1) that affects XML encryption using AES-GCM modes. Attackers can exploit missing authentication tag validation to brute-force decryption keys, decrypt sensitive XML data, and forge arbitrary ciphertexts without knowing encryption keys. No active exploitation detected (not in KEV), but the high CVSS score (8.2) and network-based attack vector make this a priority for organizations using affected SAML/XML security implementations.