How severe is CVE-2025-14437?

High severity. CVSS v3 base score is 7.5 out of 10.

Information disclosure in Wpmudev Hummingbird Performance – Cache & Page Speed Optimization For Core Web Vitals | Critical Css Minify Defer Javascript Cdn

CVE-2025-14437

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 Cloudflare API credentials.

EPSS: 0.020 (78.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Wpmudev Hummingbird Performance – Cache & Page Speed Optimization For Core Web Vitals | Critical Css Minify Defer Javascript Cdn — versions 0

Weakness classification (CWE)

CWE-532 — Insertion of Sensitive Information into Log File

References

Frequently asked questions

What is CVE-2025-14437?: CVE-2025-14437 is a high-severity vulnerability in Wpmudev Hummingbird Performance – Cache & Page Speed Optimization For Core Web Vitals | Critical Css Minify Defer Javascript Cdn, classified under Insertion of Sensitive Information into Log File. CVSS score: 7.5/10. Published 2025-12-18.
How severe is CVE-2025-14437?: High severity. CVSS v3 base score is 7.5 out of 10.