Auth bypass in Hostspa Fastcache By Host.it
CVE-2026-107763
The Fastcache by Host.it plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.7.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to add or remove the plugin's page-cache rewrite rules in the site's root .htaccess file.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/1f0b4db0-2ccd-47e8-8f40-82e97…
- plugins.trac.wordpress.org/browser/fastcache-by-host-it/tags/1.7.4/src/Admin.php
- plugins.trac.wordpress.org/browser/fastcache-by-host-it/tags/1.7.4/src/Admin.php
- plugins.trac.wordpress.org/browser/fastcache-by-host-it/tags/1.7.4/src/Core/Pla…
- plugins.trac.wordpress.org/changeset
Frequently asked questions
- What is CVE-2026-107763?
- CVE-2026-107763 is a medium-severity vulnerability in Hostspa Fastcache By Host.it, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-17.
- How severe is CVE-2026-107763?
- Medium severity. CVSS v3 base score is 4.3 out of 10.