Medium 5.7Published Jun 1, 2026

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

Updated under an hour ago (Oct 27, 2026, 4:30 PM ET)

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It affects Spring Cloud Function and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Spring Cloud Function

Exploited in the last 30 days

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.

CVSS: 5.7 MEDIUM (v3.1, CNA)CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:H
Weakness (CWE): CWE-674
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: vmware
NVD analysis: Analyzed
Record last updated: Jun 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Spring Spring Cloud Function spring:cloud_function (from the name)	from 3.2.0 before 3.2.16; from 4.1.0 before 4.1.10; from 4.2.0 before 4.2.6; from 4.3.0 before 4.3.3; from 5.0.0 before 5.0.2	CNA record
vmware spring_cloud_function vmware:spring_cloud_function	from 3.2.0 before 3.2.16; from 4.1.0 before 4.1.10; from 4.2.0 before 4.2.6; from 4.3.0 before 4.3.3; from 5.0.0 before 5.0.2	NVD

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.