WP Highlight Box <= 1.0 - Contributor+ Stored XSS via highlight-box Shortcode (CVE-2026-86790) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-86790

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

Answer in brief

CVE-2026-86790 records a Unknown severity vulnerability in WP Highlight Box <= 1.0 - Contributor+ Stored XSS via highlight-box Shortcode. The current sources do not mark it as known exploited. The current feed maps Unknown/WP Highlight Box (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 12, 2026Updated Sep 12, 2026Source checked Sep 12, 2026First seen by HOL Sep 12, 2026Material review Sep 12, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/WP Highlight Box (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/WP Highlight Boxgeneric	0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/WP Highlight Box.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 12, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 12, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.