CVE-2026-40988
Unbounded DEFLATE Inflation in SAML 2.0 Service Provider
HIGH 7.5
At a glance
- Source
- NVD
- EPSS
- EPSS 0.33 % · percentile 26 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- vmware
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-400 — Uncontrolled Resource Consumption
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | vmware |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · security@vmware.com (Secondary) |
Advisories
- GHSA-m69x-pw9p-7j3q — Spring Security SAML2 Service Provider: Unbounded writer inflates the compressed SAML payload into memory (DoS)
European references
- ENISA EUVD · EUVD-2026-35883
- GCVE · GCVE-0-2026-40988
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1206 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0958 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0719 — Multiples vulnérabilités dans les produits Spring · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*≥ 5.7.0 < 5.7.24cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*≥ 5.8.0 < 5.8.26cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.17cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*≥ 6.4.0 < 6.4.17cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*≥ 6.5.0 < 6.5.10.2cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*≥ 7.0.0 < 7.0.5.1
Affected products
| Product | Versions |
|---|---|
| Spring · Spring Security | affected 5.7.0 < 5.7.24 ; affected 5.8.0 < 5.8.26 ; affected 6.3.0 < 6.3.17 ; affected 6.4.0 < 6.4.17 ; affected 6.5.0 < 6.5.10.2 ; affected 7.0.0 < 7.0.5.1 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |