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

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Spring / Spring Cloud Function	affected 3.2.0 before 3.2.16; affected 4.1.0 before 4.1.10; affected 4.2.0 before 4.2.6; affected 4.3.0 before 4.3.3; affected 5.0.0 before 5.0.2

CWE

CWE-674

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.