CVE-2026-1560
HIGH
8.8
CVSS 3.1
Description
The Custom Block Builder – Lazy Blocks plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.2.0 via multiple functions in the 'LazyBlocks_Blocks' class. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server.
Affected WordPress components
-
Custom Block Builder – Lazy Blocks Plugin · lazy-blocksUp to and including 4.2.0View on WordPress.org
A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.
Affected products and versions
- nko Custom Block Builder – Lazy Blocks — Up to and including 4.2.0
References
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-blocks.php#L1637
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-blocks.php#L766
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/lazy-blocks/trunk/classes/class-rest.php#L88
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3454012/
- www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/b1853c88-277b-4955-b042-aeed1cffb49b?source=cve
- nvd.nist.gov Official NVD record