High severity7.5NVD Advisory· Published Jun 10, 2026· Updated Jun 12, 2026
CVE-2026-40988
CVE-2026-40988
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: 5.7.0 - 5.7.23, 5.8.0 - 5.8.25, 6.3.0 - 6.3.16, 6.4.0 - 6.4.16, 6.5.0 - 6.5.10, 7.0.0 - 7.0.5
Patches
Vulnerability mechanics
References
1- spring.io/security/cve-2026-40988nvdVendor Advisory
News mentions
1- Spring Projects: 25 Vulnerabilities Disclosed, Including SpEL Injection and Deserialization FlawsVypr Intelligence · Jun 10, 2026