CVE-2026-104762
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk11th percentile - higher than 11% of all known CVEs
Summary
The Kadence Blocks plugin for WordPress up to version 3.7.12 is vulnerable to stored XSS via the Block Font Family attribute. Exploitation requires the "Load Google Fonts Locally" option to be enabled, which is not the default configuration.
Risk Assessment
Authenticated attackers with author-level access can inject malicious scripts that execute for other users visiting affected pages, potentially leading to data theft or session hijacking.
Recommendation
Update the Kadence Blocks plugin to the latest version. If not required, disable the "Load Google Fonts Locally" option.
Other vulnerabilities in Kadence Blocks
See all- CVE-2026-105890Medium
Stored XSS vulnerability in Gutenberg Blocks by Kadence Blocks (up to 3.7.12) due to improper input neutralization during web page generation.
- CVE-2026-66696Medium
A Sensitive Data Exposure vulnerability at the contributor level in the Gutenberg Blocks by Kadence Blocks plugin (versions up to 3.7.8) allows a user with the contributor role to access sensitive data that should not be available to them.
- CVE-2026-18062Medium
The Kadence Blocks plugin for WordPress up to version 3.7.8.1 contains a Stored Cross-Site Scripting (XSS) vulnerability in the Identity Block Inner Image Content. This is due to insufficient input sanitization and output escaping, allowing authenticated attackers with contributor-level access and above to inject arbitrary web scripts.
- CVE-2026-12904Medium
The Kadence Blocks plugin for WordPress up to version 3.7.7 is vulnerable to Insecure Direct Object Reference (IDOR). The authorization check uses a user-supplied post_id, but the actual read/delete operations on optimizer analysis records are performed using a hash of the post_path, which can be manipulated by the attacker. This allows authenticated attackers with Contributor-level access or higher to read or delete analysis records belonging to other users' posts.
- CVE-2026-12902Medium
The Kadence Blocks plugin for WordPress up to version 3.7.7 fails to properly verify user authorization, allowing authenticated attackers with contributor-level access or higher to create arbitrary Media Library attachments. Attackers can remotely download images to the uploads directory, bypassing the upload_files capability boundary.
- CVE-2026-2826Medium
The Kadence Blocks plugin for WordPress up to version 3.6.3 has an authorization bypass in the process_pattern REST API endpoint, which does not properly verify the upload_files capability. Authenticated attackers with contributor level access or above can upload images to the Media Library by supplying remote image URLs.
Original NVD description (English source)
The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Block Font Family Attribute in all versions up to, and including, 3.7.12 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This encoding bypass is only triggered when the "Load Google Fonts Locally" site option (kadence_blocks_font_settings['load_fonts_local']) is enabled, which is not the default configuration.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS