What the vulnerability does
01Description
The Spectra – WordPress Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's Testimonial block in all versions up to, and including, 2.12.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
02Summary
Spectra Gutenberg Blocks versions up to 2.12.8 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors or administrators. The vulnerability affects the block editor and can impact site integrity and user data.
What an attacker can do
03Attacker Capabilities
Inject malicious scripts that run in other users' browsers when they view affected pages.
Potential impact on your site
04Site Impact
Attackers with editor access can deface content, steal admin credentials, or compromise visitor browsers.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege authenticated account (e.g., contributor or editor role).
Key dates
06Disclosure timeline
May 23, 2024
CVE published
April 8, 2026
Record updated
