CVE-2026-40988

Summary

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 Software

VendorProductVersion RangeStatus
SpringSpring Security5.7.0 < 5.7.24affected
SpringSpring Security5.8.0 < 5.8.26affected
SpringSpring Security6.3.0 < 6.3.17affected
SpringSpring Security6.4.0 < 6.4.17affected
SpringSpring Security6.5.0 < 6.5.10.2affected
SpringSpring Security7.0.0 < 7.0.5.1affected

Weaknesses

  • CWE-400: CWE-400: Uncontrolled Resource Consumption

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References