CVE-2026-62242: Spring Boot Admin Server < 4.1.2 SSRF via Unauthenticated Instance Registration

Severity: high (CVSS 8.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-13 · updated 2026-10-24
Weakness: CWE-918

Description

Spring Boot Admin Server before 4.1.2 contains a server-side request forgery vulnerability that allows unauthenticated attackers to register instances with attacker-controlled healthUrl and managementUrl parameters without validation against private IP ranges or metadata endpoints. Attackers can force the server to make HTTP requests to arbitrary internal addresses and retrieve response bodies via the actuator proxy to exfiltrate cloud credentials.

Affected products

codecentric spring-boot-admin: before 4.1.2 — fixed in 4.1.2

How to fix

Upgrade to a fixed version: codecentric spring-boot-admin 4.1.2. Check the vendor advisory for mitigations.

References

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