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Medium · 5.9 CVE-2026-59276 EUVD-2026-67168GHSA-vj7f-9q44-g5xv

Timing Attack via Non-Constant-Time Comparison of Sensitive Values

Published Aug 27, 2026 · Updated Aug 28, 2026 · Assigned by vmware

Description

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

VendorProductAffectedFixed
Spring Spring Security 7.1.0, 7.0.0 – ≤ 7.0.6, 6.5.0 – ≤ 6.5.11, 6.4.0 – ≤ 6.4.18, 5.8.0 – ≤ 5.8.27, 5.7.0 – ≤ 5.7.25 —

Advisories 1

References