CVE-2026-1560

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.

PUBLISHED Reserved 2026-01-28 | Published 2026-02-11 | Updated 2026-02-11 | Assigner Wordfence

Problem types

CWE-94 Improper Control of Generation of Code ('Code Injection')

Product status

Timeline

Credits

Youssef Elouaer finder

References

www.wordfence.com/...-277b-4955-b042-aeed1cffb49b?source=cve

plugins.trac.wordpress.org/...s/trunk/classes/class-rest.php

plugins.trac.wordpress.org/...trunk/classes/class-blocks.php

plugins.trac.wordpress.org/...trunk/classes/class-blocks.php

plugins.trac.wordpress.org/changeset/3454012/

cve.org (CVE-2026-1560)

nvd.nist.gov (CVE-2026-1560)

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