CVE-2026-1560

HighCVSS 8.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-94

Affected software

Vendor	Product	Versions
nko	Custom Block Builder – Lazy Blocks	<= 4.2.0

References

Timeline

Published: Feb 11, 2026
Last modified: Jun 17, 2026
NVD status: Deferred

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