CVE-2026-1560

Custom Block Builder – Lazy Blocks <= 4.2.0 - Authenticated (Contributor+) Remote Code Execution

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

nko · Custom Block Builder – Lazy Blocks

CVSS v3.1 WORDFENCE

8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

9.44% chance of exploitation in the next 30 days, 95th percentile

Published

2026-02-11

Updated

2026-04-08

Proof-of-concept exploits (1)

• Z3YR0xX/CVE-2026-1560-Authenticated-Remote-Code-Execution-in-Lazy-Blocks-4.2.02★ · 2026-02-10

References

• CVE Record
• NVD entry