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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.

VMware Spring Cloud Config是美国VMware公司开源的一套分布式配置管理方案。 VMware Spring Cloud Config 5.0.0版本至5.0.4版本、4.3.0版本至4.3.4版本、4.0.0版本至4.2.8版本和3.1.14及之前版本存在授权问题漏洞，该漏洞源于缺少关键功能身份验证，导致Webhook请求到Spring Cloud Config Server的/monitor端点未经验证，可能造成服务不可用。

CVSS 6.8 · Medium EPSS 0.55% · P45

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
Vulnerability Title
VMware Spring Cloud Config 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
VMware Spring Cloud Config是美国VMware公司开源的一套分布式配置管理方案。 VMware Spring Cloud Config 5.0.0版本至5.0.4版本、4.3.0版本至4.3.4版本、4.0.0版本至4.2.8版本和3.1.14及之前版本存在授权问题漏洞，该漏洞源于缺少关键功能身份验证，导致Webhook请求到Spring Cloud Config Server的/monitor端点未经验证，可能造成服务不可用。
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 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 · 20 CVEs total

CVE-2026-47852 7.5 HIGH Predictable cache directory location allows local ONNX model substitution in Spring AI
CVE-2026-47851 7.5 HIGH Unbounded recursion over attacker-controlled PDF outline tree in Spring AI PDF Document Re
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-2026-47860 6.5 MEDIUM Unbounded decompression of attacker-supplied compressed message bodies
CVE-2026-47861 6.3 MEDIUM UDP adapter sends ack to attacker-supplied host:port parsed from packet body, even when ac
CVE-2026-47856 6.3 MEDIUM JsonToObjectTransformer resolves the json__TypeId__ message header to an arbitrary class w
CVE-2026-47848 6.1 MEDIUM Reactor Netty WebSocket Client Leaks Credentials On Redirect
CVE-2026-47863 5.9 MEDIUM Reactor Core bufferTimeout fair-backpressure pipeline permanently hangs when upstream deli
CVE-2026-47857 5.9 MEDIUM Reactor Core windowTimeout fair-backpressure stream hang due to 20-bit index wrap-around
CVE-2026-47862 5.4 MEDIUM ZipTransformer uses file_name header to build workDirectory path without sanitization
CVE-2026-47859 5.4 MEDIUM Unbounded memory allocation in RFC6587SyslogDeserializer (octet-counted framing) — remote
CVE-2026-47844 5.3 MEDIUM Reactor Netty HTTP Server Leaks Exception Details
CVE-2026-47845 5.3 MEDIUM Reactor Netty HTTP Server may incorrectly evaluate proxy addresses
CVE-2026-47874 5.3 MEDIUM Reactor Netty HTTP Server Denial of Service With Pipelined Requests
CVE-2026-47834 4.8 MEDIUM Spring Data JPA Sort expression validation bypass
CVE-2026-47850 4.3 MEDIUM Spring Data REST allows mutation of the version property of immutable aggregates via PUT
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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