Clean Login <= 1.20.1 - Authenticated (Contributor+) Missing Authorization to Plugin Page Settings Update via Shortcode
- ID
- WPSEC-2026-1820
- Plugin
- Clean Login (clean-login)
- Affected
- all versions before 1.21
- Remediation
- Update to 1.21 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-862
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-28
- Attack surface
- Clean Login on WPSec AttackSurface
- Fix released
- Published
Also published later by Wordfence as CVE-2026-116610, on 2026-10-27.
Description
The Clean Login plugin for WordPress is vulnerable to unauthorized modification of data via the save_post handler that records the pages containing the plugin's shortcodes in all versions up to, and including, 1.20.1, due to a missing capability check in the get_pages_with_shortcodes() function. Saving any post, including an unpublished draft, that contains a Clean Login shortcode overwrites the site-wide login, edit, register, restore and change password page URLs and IDs. This makes it possible for authenticated attackers, with Contributor-level access and above, to point the plugin's links and redirects at a post they control, breaking the site's login, registration and password reset flows.
References
- https://wpsec.com/vuln/WPSEC-2026-1820/
- https://plugins.svn.wordpress.org/clean-login/tags/1.21/
- https://wordpress.org/plugins/clean-login/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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