CVE-2026-74932
High
Description
The WP Fastest Cache WordPress plugin before 1.5.1 does not validate the Host header before using it to build the URLs of the asset files it embeds in the pages it caches, and does not include that header in the cache key, allowing unauthenticated attackers to poison cached pages with references to a server they control and have arbitrary JavaScript run for every subsequent visitor.
SeverityHigh
CVSS7.5
Exploit probability—
Product
WP Fastest Cache
PublishedAug 25, 2026
First seenAug 25, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- WP Fastest Cache1.5.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| WP Fastest Cache | 0.9.0.3 ≤ v < 1.5.1 | 1.5.1 |
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