CVE-2026-40989 MEDIUM

CVE-2026-40989: Self Routing guard bypassed via function composition

Vendor Spring
Product Spring Cloud Function
Weakness CWE-674
Published June 1, 2026
Last update June 1, 2026
View on NVD All CVEs

CVSS base score

5.7/10
Attack vector Physical
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:H

What the vulnerability does

01Description

Under infinite recursion in the routing layer, request-handling can cause OOM error. Affected Spring Products and Versions: Spring Cloud Function 3.2.x: versions prior to 3.2.16 Spring Cloud Function 4.1.x: versions prior to 4.1.10 Spring Cloud Function 4.2.x: versions prior to 4.2.6 Spring Cloud Function 4.3.x: versions prior to 4.3.3 Spring Cloud Function 5.0.x: versions prior to 5.0.2 Older, unsupported versions are also affected.

Key dates

02Disclosure timeline

June 1, 2026 CVE published
June 1, 2026 Record updated