CVE-2021-24366

Name: CVE-2021-24366
Creator: NVD / NIST
Published: 2021-06-21T20:15:08.49+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.00%

Last modified Jun 17, 2026

CVE-2021-24366 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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). EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

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)

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.00%

58.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Admincolumns	Admin Columns	< 4.3
Admincolumns	Admin Columns	< 5.5.1

References

https://github.com/codepress/admin-columns/commit/b45571ed21d574d13687213a5002e0c68e4442c7
https://wpscan.com/vulnerability/05427156-4d5c-4aeb-add8-1c574fda5c28Exploit, Third Party Advisory
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-24366Exploit, Third Party Advisory
https://github.com/codepress/admin-columns/commit/b45571ed21d574d13687213a5002e0c68e4442c7
https://wpscan.com/vulnerability/05427156-4d5c-4aeb-add8-1c574fda5c28Exploit, Third Party Advisory
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-24366Exploit, Third Party Advisory

Timeline

Published: Jun 21, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24366?

How severe is CVE-2021-24366?

CVE-2021-24366 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24366?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-24366?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST