Unbounded DEFLATE Inflation in SAML 2.0 Service Provider
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spring | Spring Security | unaffected |
|
Configuration 1 [-]
|
No data.
| Vendor | Product | Versions | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spring | Spring Security |
|
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-m69x-pw9p-7j3q | Spring Security SAML2 Service Provider: Unbounded writer inflates the compressed SAML payload into memory (DoS) |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.331% probability within 30 days)
| Link | Providers |
|---|---|
| https://spring.io/security/cve-2026-40988 |
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Vmware
Vmware spring Security |
|
| CPEs | cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Vmware
Vmware spring Security |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Spring
Spring spring Security |
|
| Vendors & Products |
Spring
Spring spring Security |
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Unbounded DEFLATE Inflation in SAML 2.0 Service Provider | |
| Weaknesses | CWE-400 | |
| References |
| |
| Metrics |
cvssV3_1
|