CVE-2026-86790

WP Highlight Box <= 1.0 - Contributor+ Stored XSS via highlight-box Shortcode

Published Sep 12, 2026 CVSS 3.1 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
The WP Highlight Box WordPress plugin through 1.0 does not escape some shortcode attributes before outputting them in a page where the shortcode is embedded, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions wp Highlight Box
Vendors & Products Wordpress-extensions
Wordpress-extensions wp Highlight Box
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'}

ssvc

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

Type Values Removed Values Added
Weaknesses CWE-79
Type Values Removed Values Added
Description The WP Highlight Box WordPress plugin through 1.0 does not escape some shortcode attributes before outputting them in a page where the shortcode is embedded, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
Title WP Highlight Box <= 1.0 - Contributor+ Stored XSS via highlight-box Shortcode
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
WPScan
Published
Updated
Sep 12, 2026, 3:30 PM
Reserved
Sep 8, 2026, 11:53 AM
Status
Deferred
Published
Sep 12, 2026, 6:16 AM
Modified
Sep 14, 2026, 9:10 PM