[HIGH] Denial of Service in timestamp validation function

PKSA-zg8j-dc1q-jp8v CVE-2018-6519 GHSA-hhm8-2j4g-mpgg

Affected package: simplesamlphp/saml2

Affected version: <1.10.4|>=2.0,<2.3.5|>=3.0,<3.1.1

Reported by:
GitHub, FriendsOfPHP/security-advisories