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 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.

Score

CVSS 3.1 7.5 High

Status

Analyzed - security@vmware.com

Published

2026-06-10

Last modified

2026-06-27

Weaknesses

CWE-400

Affected products

• Spring Security (Spring)
• Spring Security (Vmware)

References

• https://spring.io/security/cve-2026-40988