What’s Vulnerable › Vulnerabilities
CVE-2026-74932: WP Fastest Cache 0.9.0.3 - 1.5.0 - Unauthenticated Stored XSS via Host Header Cache Poisoning
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-25 · updated 2026-08-26
- Weakness: CWE-79
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.
Affected products
- emrevona WP Fastest Cache – WordPress Cache Plugin: from 0.9.0.3 before 1.5.1 — fixed in 1.5.1
How to fix
Upgrade to a fixed version: emrevona WP Fastest Cache – WordPress Cache Plugin 1.5.1. Check the vendor advisory for mitigations.
References
Get alerted when CVE-2026-74932 or the next vulnerability affects your stack