EUVD-2026-66638
GHSA-9w38-hp46-g6xj
Severity by source
AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H
CWE-306 confirms no authentication is enforced, so PR:N; scope change and high availability reflect cascade refresh impact on downstream clients.
Primary rating from Vendor (vmware).
CVSS VectorVendor: vmware
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Unauthenticated webhook requests can be sent to Spring Cloud Config Server's /monitor endpoint due to missing validation of incoming webhook payloads, enabling any network-accessible attacker to trigger configuration refresh events across connected microservices. Affected are all branches including 3.x through 3.1.14, 4.0.x through 4.2.8, 4.3.x through 4.3.4, and 5.0.x through 5.0.4 - a broad spread across major release lines. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special credentials or session are required to reach the /monitor endpoint - the vulnerability is precisely that authentication is absent on a function that should enforce it. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | There is a notable discrepancy between the vendor-assigned CVSS vector (PR:H) and the CWE-306 classification. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the vendor-released patch per the Spring security advisory at https://spring.io/security/cve-2026-47837. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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