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CVE-2026-47837— Spring Cloud Config Server Monitor Endpoint Does Not Validate Webhook Requests

Quick assessment

Affected
Spring Spring Cloud Config
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 Cloud Config 中关键功能缺失认证（Missing Authentication for Critical Function）漏洞：发往 Spring Cloud Config 服务器 端点的 Webhook 请求未进行校验。 该问题影响以下版本的 Spring Cloud Config： 5.0.0 至 5.0.4 4.3.0 至 4.3.4 4.0.0 至 4.2.8 3.1.14 及之前版本

CVSS 6.8 · Medium

Affected Version Matrix 4

VendorProduct Version RangeStatus
Spring Spring Cloud Config 5.0.0≤ 5.0.4 affected
4.3.0≤ 4.3.4 affected
4.0.0≤ 4.2.8 affected
≤ 3.1.14 affected
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I. Basic Information for CVE-2026-47837

Vulnerability Information
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Vulnerability Title
Spring Cloud Config Server Monitor Endpoint Does Not Validate Webhook Requests
Source: CVE Program / CVE List V5
Vulnerability Description
Missing Authentication for Critical Function vulnerability in Spring Spring Cloud Config allows Webhook requests to Spring Cloud Config Server's /monitor endpoint are not validated. This issue affects Spring Cloud Config: from 5.0.0 through 5.0.4, from 4.3.0 through 4.3.4, from 4.0.0 through 4.2.8, and through 3.1.14.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Spring Spring Cloud Config 5.0.0 ~ 5.0.4 -

II. Public POCs for CVE-2026-47837

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III. Intelligence Information for CVE-2026-47837

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Vendor Advisories for CVE-2026-47837 (1)

Same Patch Batch · Spring · 2026-08-26 · 8 CVEs total

CVE-2026-47841 7.4 HIGH WebAuthn User Verification Bypass via Session Serialization
CVE-2026-47836 7.2 HIGH Spring Cloud Config Server Susceptible To TOCTOU Attack When Using SVN
CVE-2026-47842 6.5 MEDIUM Deterministic AES/CBC Encryption in Spring Security AesBytesEncryptor Allows Ciphertext Co
CVE-2026-47848 6.1 MEDIUM Reactor Netty WebSocket Client Leaks Credentials On Redirect
CVE-2026-47844 5.3 MEDIUM Reactor Netty HTTP Server Leaks Exception Details
CVE-2026-47834 4.8 MEDIUM Spring Data JPA Sort expression validation bypass
CVE-2026-47843 3.7 LOW Reactor Netty may incorrectly route traffic due to DNS resolver reuse

IV. Related Vulnerabilities

Same product: Spring Cloud Config
Same vendor: Spring
Same weakness: CWE-306

V. Comments for CVE-2026-47837

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