CVE-2026-40988

published 2026-06-10

CVE-2026-40988: 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…

Priority P3 40 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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; 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

12 ranges

Vendor	Product	Version range	Fixed in
spring	spring_security	>= 5.7.0 < 5.7.24	5.7.24
spring	spring_security	>= 5.8.0 < 5.8.26	5.8.26
spring	spring_security	>= 6.3.0 < 6.3.17	6.3.17
spring	spring_security	>= 6.4.0 < 6.4.17	6.4.17
spring	spring_security	>= 6.5.0 < 6.5.10.2	6.5.10.2
spring	spring_security	>= 7.0.0 < 7.0.5.1	7.0.5.1
vmware	spring_security	>= 5.7.0 < 5.7.24	5.7.24
vmware	spring_security	>= 5.8.0 < 5.8.26	5.8.26
vmware	spring_security	>= 6.3.0 < 6.3.17	6.3.17
vmware	spring_security	>= 6.4.0 < 6.4.17	6.4.17
vmware	spring_security	>= 6.5.0 < 6.5.11	6.5.11
vmware	spring_security	>= 7.0.0 < 7.0.6	7.0.6

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CWE-400