Spring Security Timing Attack: String.equals() non-constant comparison v67
CVE-2026-59276 Published on August 27, 2026
Timing Attack via Non-Constant-Time Comparison of Sensitive Values
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
Vulnerability Analysis
CVE-2026-59276 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Products Associated with CVE-2026-59276
Want to know whenever a new CVE is published for VMware Spring Framework? stack.watch will email you.
Affected Versions
Spring Security:- Version 7.1.0 is affected.
- Version 7.0.0, <= 7.0.6 is affected.
- Version 6.5.0, <= 6.5.11 is affected.
- Version 6.4.0, <= 6.4.18 is affected.
- Version 5.8.0, <= 5.8.27 is affected.
- Version 5.7.0, <= 5.7.25 is affected.