CVE-2025-15664: Unknown Ultimate Before After Image Slider & Gallery

Medium severity, CVSS 6.8. EPSS: 0.3% chance of exploitation in the next 30 days.

The Ultimate Before After Image Slider & Gallery WordPress plugin before 4.7.19 does not properly escape the slider's before-label value before its bundled client-side script re-injects it into the DOM, allowing users with the Author role and above to store a payload that executes in the browser of anyone (including an administrator) who views the slider.

Affected products

• Unknown Ultimate Before After Image Slider & Gallery: before 4.7.19 (fixed in 4.7.19)

Published 2026-09-02. Last modified 2026-09-03.