CVE-2025-8778: Nitropack – Performance, Page Speed & Cache Plugin For Core Web Vitals, Cdn & Image Optimization

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The NitroPack plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the nitropack_set_compression_ajax() function in all versions up to, and including, 1.18.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update the nitropack-enableCompression option and effectively change plugin compression settings.

Affected products

• Nitropack Nitropack – Performance, Page Speed & Cache Plugin For Core Web Vitals, Cdn & Image Optimization: up to and including 1.18.4

Published 2025-09-10. Last modified 2026-06-17.