# Admin Columns <= 7.1.7 - Unauthenticated Stored Cross-Site Scripting via Comment User-Agent and Tooltip Content

- **ID:** WPSEC-2026-1839
- **Plugin:** Admin Columns (`codepress-admin-columns`), https://wordpress.org/plugins/codepress-admin-columns/
- **Affected versions:** all versions before 7.1.8
- **Fixed in:** 7.1.8 (Update to 7.1.8 or later.)
- **Severity:** High 7.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions None seen (as of 2026-10-28)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/codepress-admin-columns
- **Fix released:** 2026-10-27
- **Published:** 2026-10-28
- **URL:** https://wpsec.com/vuln/WPSEC-2026-1839/

## Description

The Admin Columns plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the comment Agent (comment_agent) column and list table tooltips in all versions up to, and including, 7.1.7. This is due to the plugin's list-table tooltip script writing data-ac-tip values into the page with innerHTML, and to insufficient output escaping of the stored comment user agent. Column values are only passed through wp_kses with the 'post' allowlist, which keeps data-* attributes. This makes it possible for unauthenticated attackers who can submit comments to inject arbitrary web scripts through the User-Agent header, and for authenticated attackers with contributor-level access and above to inject them through content they control that is shown in an Admin Columns column, such as a custom field column set to the HTML field type. The scripts run when an administrator loads the list table; for the User-Agent, when the Comments list shows the Agent column.

## References

- https://wpsec.com/vuln/WPSEC-2026-1839/
- https://plugins.svn.wordpress.org/codepress-admin-columns/tags/7.1.8/
- https://wordpress.org/plugins/codepress-admin-columns/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-1839/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.