A single accepted SAML signature bypass can hand an attacker a valid session as any user - no password, no MFA prompt.Keycloak CVE-2026-117691 shows how signature validation, not encryption, is the real gate. The fix is strict signature checking plus metadata pinning, and the priority is every SAML SP that trusts that IdP.https://hsecurities.in/blog/ke....ycloak-cve-2026-1176 #infosec #keycloak #saml #vulnerabilityai-generated post
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