Sensitive Information Exposure in Hummingbird Performance Plugin by WordPress
CVE-2025-14437

7.5HIGH

Key Information:

Vendor

WordPress
Status
Hummingbird Performance – Cache & Page Speed Optimization For Core Web Vitals | Critical Css | Minify Css | Defer Css Javascript | Cdn
Vendor
CVE Published:
18 December 2025

What is CVE-2025-14437?

The Hummingbird Performance plugin for WordPress is prone to a vulnerability that exposes sensitive information due to its 'request' function. Unauthenticated attackers can exploit this flaw to access sensitive data, including Cloudflare API credentials, impacting the security and privacy of affected users. This vulnerability is present in all versions leading up to 3.18.0, necessitating immediate attention from website administrators using the plugin.

Affected Version(s)

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN * <= 3.18.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3421187/humm...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

ISMAILSHADOW
JSON
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CVE-2025-14437 : Sensitive Information Exposure in Hummingbird Performance Plugin by WordPress