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Learn moreCVE-2026-40989: Self Routing guard bypassed via function composition
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
- 4.2.x
- 4.3.x
- 5.0.x
- Older, unsupported versions are also affected
Mitigation
Users of affected versions should upgrade to the corresponding fixed version.
| Affected version(s) | Fix version | Availability |
|---|---|---|
| 3.2.x | 3.2.16 | Enterprise Support Only |
| 4.2.x | 4.2.6 | Enterprise Support Only |
| 4.3.x | 4.3.3 | OSS |
| 5.0.x | 5.0.2 | OSS |
If you are not able to upgrade, ensure functions can not be composed with itself
References
Reporting a vulnerability
To report a security vulnerability for a project within the Spring portfolio, see the Security Policy
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