CVE-2026-74932— WP Fastest Cache 0.9.0.3 - 1.5.0 - Unauthenticated Stored XSS via Host Header Cache Poisoning
Quick assessment
Affected
Unknown WP Fastest Cache
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
WP Fastest Cache WordPress 插件在 1.5.1 版本之前存在安全漏洞。该插件在使用 Host 头构建其所缓存页面中嵌入的资源文件 URL 时，未对 Host 头进行验证，并且未将该头信息纳入缓存键中。这使得未经身份验证的攻击者能够通过注入指向其控制的服务器的引用，来毒化缓存页面，从而导致后续所有访问者在浏览这些页面时执行任意 JavaScript 代码。
Possible ATT&CK Techniques 1 AI
T1133 · External Remote ServicesAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Unknown | WP Fastest Cache | 0.9.0.3< 1.5.1 |
affected |
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I. Basic Information for CVE-2026-74932
Vulnerability Information
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Vulnerability Title
WP Fastest Cache 0.9.0.3 - 1.5.0 - Unauthenticated Stored XSS via Host Header Cache Poisoning
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | WP Fastest Cache | 0.9.0.3 ~ 1.5.1 | - |
|
II. Public POCs for CVE-2026-74932
| # | POC Description | Source Link | Shenlong Link |
|---|
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News Coverage for CVE-2026-74932 (1)
-
🔗 WP Fastest Cache 0.9.0.3 – 1.5.0 – Unauthenticated Stored XSS via Host Header Cache Poisoning | CVE 2026-74932 | Plugin Vulnerabilities Read full article exploit vdb-entry technical-description
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V. Comments for CVE-2026-74932
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