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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-59276
StatePUBLISHED
Assignervmware
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-27 20:17:53 UTC
Updated2026-09-02 16:45:37 UTC
DescriptionSeveral 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

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.002570000 probability, percentile 0.170920000 (date 2026-08-30)

Problem Types: CWE-208 | CWE-208 Observable Timing Discrepancy | CWE-208 CWE-208 Observable Timing Discrepancy

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNACVSS5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Vmware Spring Security All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Spring Spring Security affected 7.1.0 custom Not specified
CNA Spring Spring Security affected 7.0.0 7.0.6 custom Not specified
CNA Spring Spring Security affected 6.5.0 6.5.11 custom Not specified
CNA Spring Spring Security affected 6.4.0 6.4.18 custom Not specified
CNA Spring Spring Security affected 5.8.0 5.8.27 custom Not specified
CNA Spring Spring Security affected 5.7.0 5.7.25 custom Not specified

References

ReferenceSourceLinkTags
spring.io/security/cve-2026-59276 [email protected] spring.io Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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