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.
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Fixes

Solution

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Workaround

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History

Tue, 25 Aug 2026 20:15:00 +0000

Type Values Removed Values Added
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.
Title WP Fastest Cache 0.9.0.3 - 1.5.0 - Unauthenticated Stored XSS via Host Header Cache Poisoning
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-08-25T20:05:20.084Z

Reserved: 2026-08-17T11:37:30.321Z

Link: CVE-2026-74932

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-25T20:17:03.250

Modified: 2026-08-25T20:17:03.250

Link: CVE-2026-74932

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.