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

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...

ai.wavemaker.runtime:wavemaker-app-runtime-core (>=1.0.0.ee-20260424025040, <=1.0.0-20260628114628), com.eurodyn.qlack.fuse:qlack-fuse-aaa (3.9.9) +89 more potentially affected by CVE-2026-41694 via org.springframework.security:spring-security-saml2-service-provider (>=6.5.0, <=6.5.10)

org.springframework.security:spring-security-saml2-service-provider MAVEN version =6.5.0, =1.0.0.ee-20260424025040, =11.14.0, =v6.3.3, =1.0.6, =15.0, =15.0, =15.0, =15.0, =15.0, =15.0, =15.0, =15.0, =15.1.3 and more Source cves: CVE-2026-41694https://vulners.com/cve/CVE-2026-4...

CVE-2026-40988: Uncontrolled Resource Consumption

An application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may be vulnerable to a denial of service by way of an unbounded writer that inflates the compressed SAML payload into memory. Affected versions: Spring Security 5.7.0 through 5.7.23;...

PT-2026-75985

An application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may be vulnerable to a denial of service by way of an unbounded writer that inflates the compressed SAML payload into memory. Affected versions: Spring Security 5.7.0 through 5.7.23;...

com.trigyn:java-web-starter (>=1.6.0, <=2.1), com.wavemaker.runtime:wavemaker-app-runtime-core (>=11.9.0, <=11.9.5.ee) +22 more potentially affected by CVE-2026-41694 via org.springframework.security:spring-security-saml2-service-provider (>=6.3.1, <=6.3.6)

org.springframework.security:spring-security-saml2-service-provider MAVEN version =6.3.1, =1.6.0, =11.9.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0 and more Source cves: CVE-2026-41694 Source advisory:...

ai.wavemaker.runtime:wavemaker-app-runtime-core (>=1.0.0.ee-20260424025040, <=1.0.0-20260628114628), com.eurodyn.qlack.fuse:qlack-fuse-aaa (3.9.9) +89 more potentially affected by CVE-2026-41694 via org.springframework.security:spring-security-saml2-service-provider (>=6.5.0, <=6.5.10)

org.springframework.security:spring-security-saml2-service-provider MAVEN version =6.5.0, =1.0.0.ee-20260424025040, =11.14.0, =v6.3.3, =1.0.6, =15.0, =15.0, =15.0, =15.0, =15.0, =15.0, =15.0, =15.0, =15.1.3 and more Source cves: CVE-2026-41694https://vulners.com/cve/CVE-2026-4...

com.eurodyn.qlack.fuse:qlack-fuse-aaa (3.9.8), com.trigyn:java-web-starter (>=2.2, <=2.13) +5 more potentially affected by CVE-2026-41694 via org.springframework.security:spring-security-saml2-service-provider (>=6.4.2, <=6.4.11)

org.springframework.security:spring-security-saml2-service-provider MAVEN version =6.4.2, =2.2, =11.10.0, =dce37d6e6c310e0d86c4f0d73f8846b8ef2f4432, =9.0-rc1, =1.15.0, =1.15.0, =2.4.0 Source cves: CVE-2026-41694 Source advisory: MEND:CVE-2026-41694...

com.eurodyn.qlack.fuse:qlack-fuse-aaa (3.9.8), com.trigyn:java-web-starter (>=2.2, <=2.13) +5 more potentially affected by CVE-2026-41003 via org.springframework.security:spring-security-saml2-service-provider (>=6.4.2, <=6.4.11)

org.springframework.security:spring-security-saml2-service-provider MAVEN version =6.4.2, =2.2, =11.10.0, =dce37d6e6c310e0d86c4f0d73f8846b8ef2f4432, =9.0-rc1, =1.15.0, =1.15.0, =2.4.0 Source cves: CVE-2026-41003 Source advisory: MEND:CVE-2026-41003...

com.trigyn:java-web-starter (>=1.6.0, <=2.1), com.wavemaker.runtime:wavemaker-app-runtime-core (>=11.9.0, <=11.9.5.ee) +22 more potentially affected by CVE-2026-41003 via org.springframework.security:spring-security-saml2-service-provider (>=6.3.1, <=6.3.6)

org.springframework.security:spring-security-saml2-service-provider MAVEN version =6.3.1, =1.6.0, =11.9.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0-m4, =2.0.0 and more Source cves: CVE-2026-41003 Source advisory:...

com.wavemaker.runtime:wavemaker-app-runtime-core (>=11.1.0, <=11.2.6.ee), io.spinnaker.gate:gate-api-tck (>=6.63.0, <=6.69.0) +7 more potentially affected by CVE-2026-41003 via org.springframework.security:spring-security-saml2-service-provider (>=5.7.2, <=5.7.11)

org.springframework.security:spring-security-saml2-service-provider MAVEN version =5.7.2, =11.1.0, =6.63.0, =6.63.0, =6.63.0, =1.17.0, =1.17.0, =5.26.1, =5.26.1, =5.26.3 - zone.cogni.asquare:security2 0.7.0 Source cves: CVE-2026-41003 Source advisory: MEND:CVE-2026-41003...

ai.wavemaker.runtime:wavemaker-app-runtime-core (>=1.0.0.ee-20260424025040, <=1.0.0-20260628114628), com.eurodyn.qlack.fuse:qlack-fuse-aaa (3.9.9) +89 more potentially affected by CVE-2026-41003 via org.springframework.security:spring-security-saml2-service-provider (>=6.5.0, <=6.5.10)

org.springframework.security:spring-security-saml2-service-provider MAVEN version =6.5.0, =1.0.0.ee-20260424025040, =11.14.0, =v6.3.3, =1.0.6, =15.0, =15.0, =15.0, =15.0, =15.0, =15.0, =15.0, =15.0, =15.1.3 and more Source cves: CVE-2026-41003https://vulners.com/cve/CVE-2026-4...

CVE-2020-5407

Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an...

CVE-2020-5407: Improper Verification of Cryptographic Signature

Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an...

PT-2020-5369

Name of the Vulnerable Software and Affected Versions Spring Security versions 5.2.x prior to 5.2.4 Spring Security versions 5.3.x prior to 5.3.2 Description The issue is related to a signature wrapping vulnerability during SAML response validation in the spring-security-saml2-service-provider...