---
id: CVE-2026-86790
title: >-
  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 C…
summary: >-
  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 C…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-79
product: WP Highlight Box
affected:
  - wp_highlight_box <= 1.0
published: '2026-09-12'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T21:10:17.423'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86790'
references:
  - url: 'https://wpscan.com/vulnerability/b48571ae-368e-4193-977a-f22fb09db4d4/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
epss: 0.00431
epssPercentile: 0.34718
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-12T15:18:23.221660Z'
ingestedAt: '2026-09-14T15:23:07.479Z'
---

## Overview

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

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.