The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'tagName' Block Attribute (blocksy/dynamic-data) in all versions up to, and including, 2.1.51 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

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Fixes

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History

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 01 Sep 2026 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Creativethemes
Creativethemes blocksy Companion
Wordpress
Wordpress wordpress
Vendors & Products Creativethemes
Creativethemes blocksy Companion
Wordpress
Wordpress wordpress

Tue, 01 Sep 2026 05:45:00 +0000

Type Values Removed Values Added
Description The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'tagName' Block Attribute (blocksy/dynamic-data) in all versions up to, and including, 2.1.51 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Title Blocksy Companion <= 2.1.51 - Authenticated (Author+) Stored Cross-Site Scripting via 'tagName' Block Attribute (blocksy/dynamic-data)
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-09-01T15:21:09.614Z

Reserved: 2026-07-31T13:39:59.541Z

Link: CVE-2026-18488

cve-icon Vulnrichment

Updated: 2026-09-01T15:21:05.722Z

cve-icon NVD

Status : Deferred

Published: 2026-09-01T06:16:36.370

Modified: 2026-09-01T20:47:54.130

Link: CVE-2026-18488

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-01T12:30:04Z

Weaknesses