#signature-validation

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Ubuntu patches SimpleSAMLphp signature validation and XXE flaws enabling user impersonation, privilege escalation, and information disclosure.

CISA AdvisoriesSep 15, 2026high

Siemens Mendix SAML module fails signature validation, allowing unauthenticated account hijacking in specific SSO configurations (CVE-2026-80465).

4 min readcisa mendix

Stories tagged #signature-validation