High [CVE-2026-40988] Spring Security: application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may…
This high-severity VMware (Broadcom) advisory covers CVE-2026-40988 affecting Spring Security.
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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.
- 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
NVD record · high-confidence parse· fetched 2 months ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
NVD record · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
NVD record · high-confidence parse· fetched 2 months ago·verify at source
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