Host Header Vulnerability in WP Fastest Cache Plugin by WordPress
CVE-2026-74932

7.5HIGH

Key Information:

Vendor

WordPress
Status
WP Fastest Cache
Vendor
CVE Published:
25 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-74932?

The WP Fastest Cache plugin for WordPress, prior to version 1.5.1, is susceptible to a vulnerability stemming from the lack of Host header validation. This deficiency allows unauthenticated attackers to manipulate cached pages by embedding references to a malicious server. Consequently, this can lead to arbitrary JavaScript execution for every visitor accessing the compromised cached content, posing significant security risks to WordPress site users.

Affected Version(s)

WP Fastest Cache 0.9.0.3 < 1.5.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-74932 - Proof of Concept

References

https://wpscan.com/vulnerability/f1eebb4a-cfd1-419e-852d-...
exploitvdb-entrytechnical-description

CVSS V3.1

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

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakub Herman
WPScan
.