CVE-2026-40988
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Vmware Spring Security
PublishedJun 10, 2026
First seenJun 10, 2026
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- vmware spring_security5.7.24, 5.8.26, 6.3.17, 6.4.17, 6.5.10.2, 7.0.5.1 or later
- org.springframework.security:spring-security-saml2-service-provider7.0.6, 6.5.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vmware spring_security | 5.7.0 ≤ v < 5.7.24, 5.8.0 ≤ v < 5.8.26, 6.3.0 ≤ v < 6.3.17, 6.4.0 ≤ v < 6.4.17, 6.5.0 ≤ v < 6.5.10.2, 7.0.0 ≤ v < 7.0.5.1 | 5.7.24, 5.8.26, 6.3.17, 6.4.17, 6.5.10.2, 7.0.5.1 |
| org.springframework.security:spring-security-saml2-service-providerMaven | 7.0.0 ≤ v < 7.0.6, 6.5.0 ≤ v < 6.5.11, 6.4.0 ≤ v ≤ 6.4.16, 6.3.0 ≤ v ≤ 6.3.16, 5.8.0 ≤ v ≤ 5.8.25, v ≤ 5.7.23 | 7.0.6, 6.5.11 |
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