CVE-2026-59276: VMware Spring Security

Medium severity, CVSS 5.9. EPSS: 0.3% chance of exploitation in the next 30 days.

Several components in Spring Security compare security-sensitive values using standard string equality (String.equals()) rather than a constant-time comparison. Because String.equals() returns as soon as it finds a differing character, the time taken to reject an incorrect value is proportional to the number of leading characters that match the expected value. Spring Security 7.1.0 Spring Security 7.0.0 - 7.0.6 Spring Security 6.5.0 - 6.5.11 Spring Security 6.4.0 - 6.4.18 Spring Security 5.8.0 - 5.8.27 Spring Security 5.7.0 - 5.7.25

Affected products

• VMware Spring Security: from 5.7.0, before 5.7.26 (fixed in 5.7.26); from 5.8.0, before 5.8.28 (fixed in 5.8.28); from 6.4.0, before 6.4.19 (fixed in 6.4.19); from 6.5.0, before 6.5.12 (fixed in 6.5.12); from 7.0.0, before 7.0.6.1 (fixed in 7.0.6.1); from 7.1.0, before 7.1.0.1 (fixed in 7.1.0.1)

Published 2026-08-27. Last modified 2026-09-02.