Product · WPMU DEV

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN

2 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

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High 7.5

CVE-2025-14437 Scanner template

Hummingbird <= 3.18.0 - Unauthenticated Sensitive Information Exposure via Log File

The Hummingbird Performance plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.18.0 via the 'request' function. This makes it possible for unauthenticated attackers to extract sensitive data including …

WPMU DEV Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN Web / CMS

Dec 18, 2025