Abstracts <= 2.7.6 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via Registration Form Update
- ID
- WPSEC-2026-2491
- Plugin
- WP Abstracts (wp-abstracts-manuscripts-manager)
- Affected
- from 2.0.0 before 2.7.7
- Remediation
- Update to 2.7.7 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness
- CWE-269
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-11-04
- Attack surface
- Abstracts on WPSec AttackSurface
- Fix released
- Published
Description
The WP Abstracts plugin for WordPress is vulnerable to Privilege Escalation via the wpabs_save_regform AJAX action and the registration/profile field sync in all versions up to, and including, 2.7.6, due to a missing capability check on the wpabstracts_user_save_regform() function (protected at most by a nonce that is given to front-end users) combined with the wpabstracts_sync_wpfields() function writing submitted registration and profile values to whatever user meta key a form field's wpSync property names, with no allow-list. This makes it possible for authenticated attackers, with Subscriber-level access and above, to overwrite the registration form definition so that a field is synced to the capabilities meta key, then submit that field from the profile or registration form to give an account the administrator role. WordPress field sync is on by default.
References
- https://wpsec.com/vuln/WPSEC-2026-2491/
- https://plugins.svn.wordpress.org/wp-abstracts-manuscripts-manager/tags/2.7.7/
- https://wordpress.org/plugins/wp-abstracts-manuscripts-manager/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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