Spring Cloud Config up to 3.1.14/4.2.8/4.3.4/5.0.4 Monitor Endpoint missing authentication

Summaryinfo

A vulnerability classified as problematic was found in Spring Cloud Config up to 3.1.14/4.2.8/4.3.4/5.0.4. This affects an unknown function of the component Monitor Endpoint. Executing a manipulation can lead to missing authentication. This vulnerability is registered as CVE-2026-47837. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as problematic was found in Spring Cloud Config up to 3.1.14/4.2.8/4.3.4/5.0.4. This vulnerability affects an unknown function of the component Monitor Endpoint. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect availability. CVE summarizes:

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.

The advisory is shared for download at spring.io. This vulnerability was named CVE-2026-47837 since 05/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation requires an enhanced level of successful authentication. There are neither technical details nor an exploit publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-2952). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

• VMware Tanzu Spring Cloud

Productinfo

Type

• Cloud Software

Vendor

• Spring

Name

• Cloud Config

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7
• 3.1.8
• 3.1.9
• 3.1.10
• 3.1.11
• 3.1.12
• 3.1.13
• 3.1.14
• 4.2.0
• 4.2.1
• 4.2.2
• 4.2.3
• 4.2.4
• 4.2.5
• 4.2.6
• 4.2.7
• 4.2.8
• 4.3.0
• 4.3.1
• 4.3.2
• 4.3.3
• 4.3.4
• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4

CPE 2.3info

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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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