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CVE-2026-59316— Spring Authorization Server Default Consent Page is vulnerable to Cross-Site Scripting (XSS)

Quick assessment

Affected
Spring Spring Authorization Server
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.

Spring Authorization Server 的默认同意页面在渲染用户可控的值时未进行 HTML 实体编码。当使用 DefaultConsentPage 时，攻击者可以构造一个包含恶意值的 OAuth2 授权请求，该值会在服务端存储，并在展示给最终用户的默认同意页面上未经过编码直接渲染。 受影响版本： Spring Authorization Server 1.5.0 - 1.5.8 Spring Authorization Server 1.4.0 - 1.4.11

CVSS 8.2 · High

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-59316

Vulnerability Information
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Vulnerability Title
Spring Authorization Server Default Consent Page is vulnerable to Cross-Site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
Spring Authorization Server's default consent page renders user-controlled values without HTML entity encoding. When using the DefaultConsentPage, an attacker can craft an OAuth2 authorization request containing a malicious value that is stored server-side and later rendered unencoded in the default consent page presented to the end user. Spring Authorization Server 1.5.0 - 1.5.8 Spring Authorization Server 1.4.0 - 1.4.11
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Spring Spring Authorization Server 1.5.0 ~ 1.5.8 -

II. Public POCs for CVE-2026-59316

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III. Intelligence Information for CVE-2026-59316

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Vendor Pages for CVE-2026-59316 (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-2026-59324 8.2 HIGH fluxTransform shared RequestMessageHolder causes cross-message header leakage under async
CVE-2026-47877 8.2 HIGH Spring Security Authorization Server Default Consent Page is vulnerable to Cross-Site Scri
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-2026-59293 6.6 MEDIUM SMB minimum protocol dialect defaults to SMB1
CVE-2026-59284 6.6 MEDIUM Spring Cloud Commons no allow list for writable env actuator endpoint
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-2026-59276 5.9 MEDIUM Timing Attack via Non-Constant-Time Comparison of Sensitive Values
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 Authorization Server
Same vendor: Spring

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