Brave Popup Builder <= 0.8.8 - Unauthenticated Arbitrary Shortcode Execution via Quiz Score Data
- ID
- WPSEC-2026-1916
- Plugin
- Brave – Create Popup, Optins, Lead Generation, Survey, Sticky Elements & Interactive Content (brave-popup-builder)
- Affected
- all versions before 0.8.9
- Remediation
- Update to 0.8.9 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- Weakness
- CWE-94
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-29
- Attack surface
- Brave Popup Builder on WPSec AttackSurface
- Fix released
- Published
Description
The Brave plugin for WordPress is vulnerable to arbitrary shortcode execution via the 'quizData' parameter of the bravepop_form_submission AJAX action in all versions up to, and including, 0.8.8. This is due to the plugin taking the quiz result (userScore, userCorrect, availableScore, totalQuestions, scoring) from the client-supplied request without validation. It substitutes these values into the form's e-mail, success-message and redirect templates, which are then passed to do_shortcode(). This makes it possible for unauthenticated attackers to execute arbitrary shortcodes and to forge quiz results. The attack works on any site that shows a Brave form whose message, e-mail or redirect template uses a quiz placeholder such as [total_score] or [brave_quizcondition].
References
- https://wpsec.com/vuln/WPSEC-2026-1916/
- https://plugins.svn.wordpress.org/brave-popup-builder/tags/0.8.9/
- https://wordpress.org/plugins/brave-popup-builder/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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