Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2026-40988

Severity CVSS v4.0:
Pending analysis
Type:
CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')
Publication date:
10/06/2026
Last modified:
12/06/2026

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.<br /> <br /> Affected versions:<br /> 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.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 5.7.0 (including) 5.7.24 (excluding)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 5.8.0 (including) 5.8.26 (excluding)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 6.3.0 (including) 6.3.17 (excluding)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 6.4.0 (including) 6.4.17 (excluding)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 6.5.0 (including) 6.5.11 (excluding)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 7.0.0 (including) 7.0.6 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools