CVE-2026-86790

MEDIUM CVSS 3.1: 6.8 EPSS 0.43%
Updated Sep 15, 2026
WordPress
Parameter Value
CVSS 6.8 (MEDIUM)
Type CWE-79 Cross-Site Scripting (XSS), CWE-79 (Cross-Site Scripting (XSS))
Vendor WordPress
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
High
Admin privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products

unknown:wp highlight box