GHSA-ww38-37g9-m3q3LowCVSS 3.7

Spring Security SAML2 Service Provider: Decryption Oracle Vulnerability from Unsigned SAML Response and Logout Payloads

Published
June 10, 2026
Last Modified
August 12, 2026

🔗 CVE IDs covered (1)

CVE-2026-41694 →

📋 Description

Since Spring Security SAML decrypts SAML Responses as well as elements of SAML LogoutRequests and LogoutResponses without requiring a valid signature, attackers may be able to craft these SAML payloads and use the Service Provider as a decryption oracle.

Affected versions: Spring Security 5.7.0 through 5.7.23; 5.8.0 through 5.8.25; 6.3.0 through 6.3.16; 6.4.0 through 6.4.16; 6.5.0 through 6.5.10; 7.0.0 through 7.0.5.

🎯 Affected products6

  • maven/org.springframework.security:spring-security-saml2-service-provider:>= 7.0.0, <= 7.0.5
  • maven/org.springframework.security:spring-security-saml2-service-provider:>= 6.5.0, <= 6.5.10
  • maven/org.springframework.security:spring-security-saml2-service-provider:>= 6.4.0, <= 6.4.16
  • maven/org.springframework.security:spring-security-saml2-service-provider:>= 6.3.0, <= 6.3.16
  • maven/org.springframework.security:spring-security-saml2-service-provider:>= 5.8.0, <= 5.8.25
  • maven/org.springframework.security:spring-security-saml2-service-provider:<= 5.7.23

🔗 References (5)