The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp.Referenceshttps://simplesamlphp.org/security/201801-01https://www.debian.org/security/2018/dsa-4127
