Vulnerability · Published Aug 27, 2026 · Assigned by vmware
CVE-2026-59276Timing Attack via Non-Constant-Time Comparison of Sensitive Values
Medium 5.9
In plain English
A medium-severity security flaw in Spring Security from Spring. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Spring | Spring Security | 7.1.07.0.0 – through 7.0.66.5.0 – through 6.5.116.4.0 – through 6.4.185.8.0 – through 5.8.275.7.0 – through 5.7.25 |
Weakness: CWE-208 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N