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Description

The Widget Options – Advanced Conditional Visibility for Gutenberg Blocks & Classic Widgets plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.2.2 via the Display Logic feature. This is due to the plugin using eval() on user-supplied Display Logic expressions with an insufficient blocklist/allowlist that can be bypassed using array_map with string concatenation, combined with a lack of authorization enforcement on the extended_widget_opts_block attribute. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server. The vulnerability was partially patched in version 4.2.0.

PUBLISHED Reserved 2026-02-06 | Published 2026-05-02 | Updated 2026-05-04 | Assigner Wordfence




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

Problem types

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

Product status

Default status
unaffected

Any version
affected

Default status
unaffected

Any version
affected

Timeline

2026-02-06:Vendor Notified
2026-05-01:Disclosed

Credits

Matthew Rollings finder

Hung Nguyen finder

References

www.wordfence.com/...-fc92-4cf6-96b4-405ff5a5fd5a?source=cve

plugins.trac.wordpress.org/...utenberg/gutenberg-toolbar.php

plugins.trac.wordpress.org/...ions/trunk/includes/extras.php

plugins.trac.wordpress.org/...ions/trunk/includes/extras.php

plugins.trac.wordpress.org/changeset/3481338/

plugins.trac.wordpress.org/changeset/3514411/

cve.org (CVE-2026-2052)

nvd.nist.gov (CVE-2026-2052)

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