Vulnerability · Published Sep 12, 2026 · Assigned by WPScan
CVE-2026-86790WP Highlight Box <= 1.0 - Contributor+ Stored XSS via highlight-box Shortcode
Medium 6.8
In plain English
A medium-severity cross-site scripting in WP Highlight Box from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.4%top 62.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | WP Highlight Box | 0 – through 1.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
References
- https://wpscan.com/vulnerability/b48571ae-368e-4193-977a-f22fb09db4d4/ exploit, vdb-entry, technical-description