CVE-2026-12477: Gravity Booster <= 5.26 - Authenticated (Editor+) Stored Cross-Site Scripting via 'stylerSettings' Parameter
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 unfilteredhtml has been disabled.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-12477?
CVE-2026-12477 has a medium severity rating of 4.4.
How can I fix CVE-2026-12477?
To fix CVE-2026-12477, update the Gravity Booster plugin to version 5.27 or later.
What type of vulnerability is CVE-2026-12477?
CVE-2026-12477 is a Stored Cross-Site Scripting (XSS) vulnerability.
Who can exploit CVE-2026-12477?
Authenticated attackers with editor permissions can exploit CVE-2026-12477.
What impact does CVE-2026-12477 have?
CVE-2026-12477 can allow attackers to execute malicious scripts in the context of the targeted user's session.