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CVE-2026-59276— Timing Attack via Non-Constant-Time Comparison of Sensitive Values

Quick assessment

Affected
Spring Spring Security
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

VMware Spring Security是美国VMware公司开源的一套为Spring应用提供安全保护的安全框架。 VMware Spring Security 7.1.0版本、7.0.0版本至7.0.6版本、6.5.0版本至6.5.11版本、6.4.0版本至6.4.18版本、5.8.0版本至5.8.27版本和5.7.0版本至5.7.25版本存在安全漏洞，该漏洞源于多个组件使用标准字符串相等性（String.equals()）而非恒定时间比较来比较安全敏感值，可能因时序差异导致信息泄露。

CVSS 5.9 · Medium EPSS 0.33% · P25

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 6

VendorProduct Version RangeStatus
Spring Spring Security 7.1.0 affected
7.0.0≤ 7.0.6 affected
6.5.0≤ 6.5.11 affected
6.4.0≤ 6.4.18 affected
5.8.0≤ 5.8.27 affected
5.7.0≤ 5.7.25 affected
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I. Basic Information for CVE-2026-59276

Vulnerability Information
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Vulnerability Title
Timing Attack via Non-Constant-Time Comparison of Sensitive Values
Source: CVE Program / CVE List V5
Vulnerability 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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
VMware Spring Security 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
VMware Spring Security是美国VMware公司开源的一套为Spring应用提供安全保护的安全框架。 VMware Spring Security 7.1.0版本、7.0.0版本至7.0.6版本、6.5.0版本至6.5.11版本、6.4.0版本至6.4.18版本、5.8.0版本至5.8.27版本和5.7.0版本至5.7.25版本存在安全漏洞，该漏洞源于多个组件使用标准字符串相等性（String.equals()）而非恒定时间比较来比较安全敏感值，可能因时序差异导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Spring Spring Security 7.1.0 -

II. Public POCs for CVE-2026-59276

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III. Intelligence Information for CVE-2026-59276

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Vendor Pages for CVE-2026-59276 (1)

Same Patch Batch · Spring · 2026-08-27 · 64 CVEs total

CVE-2026-59270 9.4 CRITICAL Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN o
CVE-2026-47877 8.2 HIGH Spring Security Authorization Server Default Consent Page is vulnerable to Cross-Site Scri
CVE-2026-59324 8.2 HIGH fluxTransform shared RequestMessageHolder causes cross-message header leakage under async
CVE-2026-59316 8.2 HIGH Spring Authorization Server Default Consent Page is vulnerable to Cross-Site Scripting (XS
CVE-2026-59307 8.0 HIGH Deserialization allow-list silently bypassed: setBeanClassLoader replaces deserializer but
CVE-2026-47879 7.7 HIGH Spring Cloud Gateway SSRF and native file access with gRPC
CVE-2026-47849 7.1 HIGH Spring Data REST allows mutation of identifier and version properties via JSON Patch
CVE-2026-59311 6.8 MEDIUM Fixed predictable /tmp/ziptransformer work directory enables symlink pre-creation
CVE-2026-59272 6.8 MEDIUM Log4j2 AmqpAppender disables TLS hostname verification by default
CVE-2026-59284 6.6 MEDIUM Spring Cloud Commons no allow list for writable env actuator endpoint
CVE-2026-59293 6.6 MEDIUM SMB minimum protocol dialect defaults to SMB1
CVE-2026-59275 6.6 MEDIUM Remote JVM termination: nested-array Java deserialization bypasses allowlist, triggers Sta
CVE-2026-59317 6.5 MEDIUM In Spring for Apache Kafka, missing header validation in DeadLetterPublishingRecovererFact
CVE-2026-59274 6.5 MEDIUM Unbounded decompression in UnZipTransformer enables zip-bomb DoS
CVE-2026-59278 6.5 MEDIUM In Spring for Apache Kafka, SSRF via DNS resolution triggered by untrusted java.net types
CVE-2026-59320 6.5 MEDIUM In Spring AMQP the link credit never replenished on listener exception path
CVE-2026-47864 6.4 MEDIUM Unsafe Java deserialization in SerializingHttpMessageConverter — remote code execution
CVE-2026-59322 6.3 MEDIUM EmbeddedHeadersJsonMessageMapper default gives wire peer full control of MessageHeaders
CVE-2026-47881 5.9 MEDIUM Denial of Service in Spring Batch FlatFileItemReader via Malformed Input File
CVE-2026-59294 5.9 MEDIUM Arbitrary File Write via Path Traversal in ResourceCacheService

Showing top 20 of 64 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Spring Security
Same vendor: Spring

V. Comments for CVE-2026-59276

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