CVE-2026-40989

Self Routing guard bypassed via function composition

State: Published
Severity: 5.7 Medium
Published: Jun 1, 2026
Updated: Jun 1, 2026
Reserved: Apr 16, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.7 Medium	CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:H	vmware

Weaknesses

CWE-674 Uncontrolled Recursion

Affected Products

Product	Versions
Spring Cloud FunctionSpring	3.2.0 to before 3.2.16Affected 4.1.0 to before 4.1.10Affected 4.2.0 to before 4.2.6Affected 4.3.0 to before 4.3.3Affected 5.0.0 to before 5.0.2Affected

References

https://spring.io/security/cve-2026-40989

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