CVE-2026-59276: CWE-208 Observable Timing Discrepancy in Spring Spring Security
Description
CVE-2026-59276 is a timing discrepancy vulnerability in Spring Security where security-sensitive string comparisons use standard equality checks instead of constant-time comparisons. This causes the time taken to reject incorrect values to vary based on the number of matching leading characters. The vulnerability affects multiple versions of Spring Security including 5.7.0 through 7.1.0. The CVSS score is 5.9, indicating medium severity.
CVSS v3.1
Score 5.9medium
Affected software
Spring
Spring Security
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Spring Security versions 5.7.0 through 7.1.0 perform security-sensitive comparisons using String.equals(), which returns as soon as a differing character is found. This behavior leaks timing information proportional to the number of matching leading characters, creating an observable timing discrepancy (CWE-208). This can potentially allow attackers to infer sensitive values by measuring response times. No official remediation or patch information is provided in the available data.
Potential Impact
The vulnerability allows an attacker to gain information about security-sensitive values by measuring the time taken to reject incorrect inputs. This can lead to partial disclosure of secret values, potentially aiding further attacks. The CVSS score of 5.9 reflects a medium impact with high confidentiality impact but no integrity or availability impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should monitor vendor communications for updates. No vendor advisory or patch links are provided in the current data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- vmware
- Date Reserved
- 2026-07-04T18:13:09.973Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a909cf4acd9273b49b2cddf
Added to database: 08/27/2026, 20:24:20 UTC
Last enriched: 09/10/2026, 04:24:00 UTC
Last updated: 10/11/2026, 18:48:20 UTC
Views: 43
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