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CVE-2021-38321

MEDIUM 6.1 CVSS 3.1
Published
September 9, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Description

The Custom Menu Plugin WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the selected_menu parameter found in the ~/custom-menus.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 1.3.3.

Affected WordPress components

  • custom-sub-menus Plugin · custom-sub-menus
    Confirmed match Homeless
    From 1.3.3 (including) to 1.3.3 (including); Up to and including 1.3.3
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Custom Menu Plugin Custom Menu Plugin — From 1.3.3 (including) to 1.3.3 (including)
  • custom-sub-menus_project custom-sub-menus — Up to and including 1.3.3

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/custom-sub-menus/trunk/custom-menus.php?rev=2205549#L136 Exploit, Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/vulnerability-advisories/#CVE-2021-38321 Third Party Advisory
  • nvd.nist.gov Official NVD record