What’s Vulnerable › Vulnerabilities
CVE-2026-12477: Gravity Booster <= 5.26 - Authenticated (Editor+) Stored Cross-Site Scripting via 'stylerSettings' Parameter
- Severity: medium (CVSS 4.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-16 · updated 2026-08-20
- Weakness: CWE-79
Description
The Gravity Booster – Styles & Layouts for Gravity Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 5.26 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Affected products
References
- https://plugins.trac.wordpress.org/browser/styles-and-layouts-for-gravity-forms/tags/5.26/display/class-styles.php#L147
- https://plugins.trac.wordpress.org/browser/styles-and-layouts-for-gravity-forms/tags/5.26/display/class-styles.php#L148
- https://plugins.trac.wordpress.org/browser/styles-and-layouts-for-gravity-forms/tags/5.26/display/class-styles.php#L76
- https://plugins.trac.wordpress.org/browser/styles-and-layouts-for-gravity-forms/tags/5.26/includes/admin/fetch/stla-admin-fetch-content-area.php#L290
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3637650%40styles-and-layouts-for-gravity-forms&new=3637650%40styles-and-layouts-for-gravity-forms
- https://www.wordfence.com/threat-intel/vulnerabilities/id/413e5515-6cc9-4fa9-908e-2dc68778f5cb?source=cve
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