CVE-2026-16537: Unknown Slick Slider

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

The Slick Slider WordPress plugin before 0.5.3 does not sanitize and escape a shortcode attribute value before outputting it in an HTML attribute, allowing users with the Contributor role and above to perform Stored Cross-Site Scripting attacks that execute when a user views the affected post.

Affected products

• Unknown Slick Slider: before 0.5.3 (fixed in 0.5.3)

Published 2026-08-06. Last modified 2026-08-26.