simplesamlphp before 1.6.3 (squeeze) and before 1.8.2 (sid) incorrectly handles XML encryption which could allow remote attackers to decrypt or forge messages.
github.com/simplesamlphp/simplesamlphp
github.com/simplesamlphp/simplesamlphp/blob/b3059c51a915910c6631fb2ee597c0fb6ad9162b/docs/simplesamlphp-changelog-1.x.md?plain=1#L1624
nvd.nist.gov/vuln/detail/CVE-2011-4625
secure1.securityspace.com/smysecure/catid.html?in=DSA%202330-1
security-tracker.debian.org/tracker/CVE-2011-4625
www.mageni.net/vulnerability/debian-security-advisory-dsa-2330-1-simplesamlphp-70545