CVE-2026-41669

Admidio is an open-source user management solution. Prior to version 5.0.9, the Admidio SAML Identity Provider implementation discards the return value of its validateSignature() method at both call sites (handleSSORequest() line 418 and handleSLORequest() line 613). The method returns error strings on failure rather than throwing exceptions, but the developer believed it would throw (per comments on lines 416 and 611). This means the smc_require_auth_signed configuration option is completely ineffective — unsigned or invalidly-signed SAML AuthnRequests and LogoutRequests are processed identically to properly signed ones. This issue has been patched in version 5.0.9.

• CWE-347

• https://github.com/Admidio/admidio/releases/tag/v5.0.9
• https://github.com/Admidio/admidio/security/advisories/GHSA-25cw-98hg-g3cg
• https://github.com/Admidio/admidio/security/advisories/GHSA-25cw-98hg-g3cg

Published

May 7, 2026

Last Modified

Jun 17, 2026

Status

Deferred

• Same Subject, Wrong User: A Cross-Issuer Account Takeover in n8nStrix found an identity-binding bug in n8n's token-exchange flow enabling account takeover.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-41662Admidio is an open-source user management solution. Prior to…5.2
• CVE-2026-41663Admidio is an open-source user management solution. Prior to…3.5
• CVE-2026-41664Integer overflow in memory copy size calculation in Samsung …6.6
• CVE-2026-41665Integer overflow in scratch buffer initialization size calcu…6.1
• CVE-2026-41666Integer overflow in tensor copy size calculation in Samsung …6.6
• CVE-2026-41667Integer overflow in constant tensor data size calculation in…6.6
• CVE-2026-4167A vulnerability was determined in Belkin F9K1122 1.00.33. Th…8.8
• CVE-2026-41670Admidio is an open-source user management solution. Prior to…8.2
• CVE-2026-41671Admidio is an open-source user management solution. Prior to…6.8
• CVE-2026-41672xmldom is a pure JavaScript W3C standard-based (XML DOM Leve…8.7
• CVE-2026-41673xmldom is a pure JavaScript W3C standard-based (XML DOM Leve…8.7
• CVE-2026-41674xmldom is a pure JavaScript W3C standard-based (XML DOM Leve…8.7