CVE-2026-86790

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

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

WP Highlight Box

CVSS v3.1 CNA

6.8 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

EPSS

0.43% chance of exploitation in the next 30 days, 36th percentile

Published

2026-09-12

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/b48571ae-368e-4193-977a-f22fb09db4d4/

References

• CVE Record
• NVD entry