The Highlighting Code Block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.2.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

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Fixes

Solution

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Workaround

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History

Mon, 13 Jul 2026 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Looswebstudio
Looswebstudio highlighting Code Block
Wordpress
Wordpress wordpress
Vendors & Products Looswebstudio
Looswebstudio highlighting Code Block
Wordpress
Wordpress wordpress

Fri, 10 Jul 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Fri, 10 Jul 2026 09:00:00 +0000

Type Values Removed Values Added
Description The Highlighting Code Block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.2.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Title Highlighting Code Block <= 2.2.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'font_family' Setting
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-07-10T18:15:41.887Z

Reserved: 2026-06-12T14:32:13.190Z

Link: CVE-2026-12108

cve-icon Vulnrichment

Updated: 2026-07-10T18:15:37.874Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-01T13:15:03Z

Weaknesses