CVE-2026-40989

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.

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CVSS v3.1 Score

5.7

MEDIUM

CVSS:3.1/AV:P/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:H

EPSS — Exploit Prediction

0.0021

Probability of exploitation

0.11%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-674 CWE-674

Affected Products

Vendor	Product	Versions
vmware	spring_cloud_function	3.2.0 — 3.2.16
vmware	spring_cloud_function	4.1.0 — 4.1.10
vmware	spring_cloud_function	4.2.0 — 4.2.6
vmware	spring_cloud_function	4.3.0 — 4.3.3
vmware	spring_cloud_function	5.0.0 — 5.0.2

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2026-40989? +

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. It has a CVSS v3.1 base score of 5.7 (MEDIUM).

How severe is CVE-2026-40989? +

CVE-2026-40989 has a CVSS v3.1 score of 5.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0021, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-40989? +

CVE-2026-40989 affects products from vmware, specifically: spring_cloud_function. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-40989? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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