CVE-2021-24366: Admincolumns Admin Columns

Medium severity, CVSS 5.4. EPSS: 1% chance of exploitation in the next 30 days.

The Admin Columns WordPress plugin before 4.3 and Admin Columns Pro WordPress plugin before 5.5.1 do not sanitise and escape its Label settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)

Affected products

• Admincolumns Admin Columns: before 4.3 (fixed in 4.3); before 5.5.1 (fixed in 5.5.1)

Published 2021-06-21. Last modified 2026-06-17.