Threat intelligence

Highlighting Code Block <= 2.2.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'font_family' Setting

CVE-2026-12108 · highlighting-code-block

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Highlighting Code Block at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Highlighting Code Block <= 2.2.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'font_family' Setting
Affected software: highlighting-code-block(Plugin)
Affected versions: ≤ 2.2.0
Authentication: Authenticated (see advisory title)
Vulnerability type: Cross-site scripting
CVE: CVE-2026-12108
Published: 9 July 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory 166e1d3a-3fd9-4ab0-ba0d-707c6d59e0cd). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Highlighting Code Block version against this catalog when the Defence plugin is connected to your WordPress site.

Start SiteRespond Defence for WordPress — £29.99/monthScan your website

All Highlighting Code Block advisoriesBack to catalog