Uncontrolled Recursion in Spring Cloud Function - CVE-2026-40989
Published: May 11, 2026
Vulnerability identifier: #VU130980
CSH Severity: Low
CVSS v4: 5.2 [CVSS:4.0/AV:P/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-40989
CWE-ID: CWE-674
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an attacker with physical access to cause a denial of service.
The vulnerability exists due to improper control of recursion in the routing layer when handling self-composed functions. An attacker with physical access can trigger infinite recursion in request handling to cause a denial of service.
User interaction is required.
Affected software
Spring Cloud Function
How to mitigate CVE-2026-40989
Install security update from vendor's website.
Spring Cloud Function - addressed in versions 3.2.16, 4.2.6, 4.3.3, 5.0.2