8.8
High
CVE-2026-1560 The Custom Block Builder – Lazy Blocks plugin for WordPress is vulnerable to Remote Code Execution in all versions up…
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Custom Block Builder – Lazy Blocks 4.2 | earliest → 4.2.0 | No fix stated |