What is CVE-2026-40972?

CVE-2026-40972 is a high-severity vulnerability in Spring Boot, classified under CWE-208. CVSS score: 7.5/10. Published 2026-04-28.

How severe is CVE-2026-40972?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Spring Boot

CVE-2026-40972

An attacker on the same network as the remote application may be able to utilize a timing attack to discover information about the remote secret. In extreme circumstances this could result in the attacker determining the secret and uploadi…

EPSS: 0.001 (18.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Spring Boot — versions 4.0.0, 3.5.0, 3.4.0
Vmware Spring_boot

Weakness classification (CWE)

CWE-208

References

security@vmware.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-40972?: CVE-2026-40972 is a high-severity vulnerability in Spring Boot, classified under CWE-208. CVSS score: 7.5/10. Published 2026-04-28.
How severe is CVE-2026-40972?: High severity. CVSS v3 base score is 7.5 out of 10.