GHSA-m69x-pw9p-7j3q
Spring Security SAML2 Service Provider: Unbounded writer inflates the compressed SAML payload into memory (DoS)
At a glance
- Published
- Updated
- CVE
- CVE-2026-40988
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.springframework.security:spring-security-saml2-service-provider | introduced 7.0.0, fixed 7.0.6 |
| Maven · org.springframework.security:spring-security-saml2-service-provider | introduced 6.5.0, fixed 6.5.11 |
| Maven · org.springframework.security:spring-security-saml2-service-provider | introduced 6.4.0, last affected 6.4.16 |
| Maven · org.springframework.security:spring-security-saml2-service-provider | introduced 6.3.0, last affected 6.3.16 |
| Maven · org.springframework.security:spring-security-saml2-service-provider | introduced 5.8.0, last affected 5.8.25 |
| Maven · org.springframework.security:spring-security-saml2-service-provider | introduced 0, last affected 5.7.23 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-40988 ADVISORY
- https://github.com/spring-projects/spring-security PACKAGE
- https://github.com/spring-projects/spring-security/releases/tag/6.5.11 WEB
- https://github.com/spring-projects/spring-security/releases/tag/7.0.6 WEB
- https://spring.io/security/cve-2026-40988 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |