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CVE-2026-59270— Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN on all network interfaces

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.

以下是该漏洞描述及受影响版本的中文翻译： 漏洞描述： Spring Security 内置的 UnboundID LDAP 服务器（ ）会无条件地注册一个管理凭据，并将其监听器绑定到所有可用的网络接口上。 受影响的 Spring Security 版本： 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.

CVSS 9.4 · Critical

Possible ATT&CK Techniques 2 AI

T1071.004 · DNS T1021 · Remote Services
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I. Basic Information for CVE-2026-59270

Vulnerability Information
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Vulnerability Title
Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN on all network interfaces
Source: CVE Program / CVE List V5
Vulnerability Description
Spring Security's embedded UnboundID LDAP server (UnboundIdContainer) unconditionally registers an administrative credential and binds its listener to all available network interfaces. 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:L/PR:N/UI:N/S:U/C:H/I:H/A:L
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 Security 7.1.0 -

II. Public POCs for CVE-2026-59270

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III. Intelligence Information for CVE-2026-59270

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Vendor Advisories for CVE-2026-59270 (1)

Same Patch Batch · Spring · 2026-08-27 · 25 CVEs total

CVE-2026-47877 8.2 HIGH Spring Security Authorization Server Default Consent Page is vulnerable to Cross-Site Scri
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-2026-59275 6.6 MEDIUM Remote JVM termination: nested-array Java deserialization bypasses allowlist, triggers Sta
CVE-2026-59278 6.5 MEDIUM In Spring for Apache Kafka, SSRF via DNS resolution triggered by untrusted java.net types
CVE-2026-59274 6.5 MEDIUM Unbounded decompression in UnZipTransformer enables zip-bomb DoS
CVE-2026-47864 6.4 MEDIUM Unsafe Java deserialization in SerializingHttpMessageConverter — remote code execution
CVE-2026-47881 5.9 MEDIUM Denial of Service in Spring Batch FlatFileItemReader via Malformed Input File
CVE-2026-47875 5.6 MEDIUM JobParameterDeserializer bypasses the trusted-type allowlist
CVE-2026-47878 5.6 MEDIUM Unsafe Java deserialization in DefaultExecutionContextSerializer without class allowlist
CVE-2026-47880 5.4 MEDIUM DefaultJmsHeaderMapper copies all JMS user properties into MessageHeaders without excludin
CVE-2026-59271 5.3 MEDIUM Admin password disclosed in BrokerNotAliveException message
CVE-2026-47894 4.9 MEDIUM Spring Cloud Config Server Native Environment Repository Exposure
CVE-2026-47892 Spring Framework Header Predicate Bypass in WebFlux Functional Endpoints
CVE-2026-47889 Spring Framework sameSite Attribute Dropped in JettyCoreServerHttpResponse
CVE-2026-47891 Spring Framework maxInMemorySize Bypassed in Jaxb2Decoder
CVE-2026-47890 Spring Framework Server Sent Event stream corruption while rendering fragments
CVE-2026-47893 Spring Framework Request Headers Included in Exception Reasons in HandshakeWebsocketServic
CVE-2026-47883 Spring Framework Open Redirect in UrlHandlerFilter
CVE-2026-47884 Spring Framework Improper Path Limitation in XsltView

Showing top 20 of 25 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Spring Security
Same vendor: Spring

V. Comments for CVE-2026-59270

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