CVE-2026-59276Timing Attack via Non-Constant-Time Comparison of Sensitive Values
Updated under an hour ago ()
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It affects Spring Security and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- CVSS
- 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-208
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- vmware
- NVD analysis
- Analyzed
- Record last updated
- Aug 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Spring Spring Security spring:security (from the name) | 7.1.0; from 7.0.0 through 7.0.6; from 6.5.0 through 6.5.11; from 6.4.0 through 6.4.18; from 5.8.0 through 5.8.27; from 5.7.0 through 5.7.25 | CNA record |
vmware spring_security vmware:spring_security | from 5.7.0 before 5.7.26; from 5.8.0 before 5.8.28; from 6.4.0 before 6.4.19; from 6.5.0 before 6.5.12; from 7.0.0 before 7.0.6.1; from 7.1.0 before 7.1.0.1 | NVD |
References
- https://spring.io/security/cve-2026-59276vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.