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Description

The Ultimate Blocks – WordPress Blocks Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple widgets in all versions up to, and including, 3.3.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

PUBLISHED Reserved 2025-03-28 | Published 2025-06-10 | Updated 2026-04-08 | Assigner Wordfence




MEDIUM: 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

Any version
affected

Timeline

2025-03-27:Discovered
2025-06-09:Disclosed

Credits

Nguyen Ngoc Quang Bach finder

References

www.wordfence.com/...-fb23-41eb-b1a4-d793ae924d9a?source=cve

plugins.trac.wordpress.org/....9/src/blocks/how-to/block.php

plugins.trac.wordpress.org/...locks/content-filter/block.php

plugins.trac.wordpress.org/...locks/tabbed-content/block.php

plugins.trac.wordpress.org/...locks/content-toggle/block.php

cve.org (CVE-2025-2918)

nvd.nist.gov (CVE-2025-2918)

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