CVE-2026-15345: Shortpixel Adaptive Images – Webp, Avif, Cdn, Image Optimization

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

The ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.11.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify configuration options of third-party plugins including ShortPixel Image Optimizer, Autoptimize, WP Rocket, Imagify, and LiteSpeed Cache, as well as the plugin's own API key and account binding. Exploitation requires the respective third-party plugins to be installed, as the impact against those plugins' settings is only reachable when those plugins are present.

Affected products

• Shortpixel Shortpixel Adaptive Images – Webp, Avif, Cdn, Image Optimization: up to and including 3.11.5

Published 2026-08-16. Last modified 2026-08-20.