Answer in brief
CVE-2026-86790 records a Medium severity (CVSS 6.8) 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), 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.
CVSS is 6.8. 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.
The current feed maps Unknown/WP Highlight Box (generic), Unknown/WP Highlight Box (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/WP Highlight Boxgeneric | 0 | Not reported |
| Unknown/WP Highlight Boxgeneric | >=0 <=1.0 | Not reported |
Published upstream
Sep 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 12, 2026
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.