CVE-2021-24365: Admin Columns Free (< 4.3.2) & Pro (< 5.5.2) - Authenticated Stored Cross-Site Scripting (XSS) in Custom Field

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-07-12 · updated 2026-06-17
Weakness: CWE-79

Description

The Admin Columns WordPress plugin Free before 4.3.2 and Pro before 5.5.2 allowed to configure individual columns for tables. Each column had a type. The type "Custom Field" allowed to choose an arbitrary database column to display in the table. There was no escaping applied to the contents of "Custom Field" columns.

Affected products

AdminColumns Admin Columns: before 4.3.2; before 5.5.2 — fixed in 4.3.2, 5.5.2

How to fix

Upgrade to a fixed version: AdminColumns Admin Columns 4.3.2, 5.5.2. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2021-24365 or the next vulnerability affects your stack