CVE-2026-107763 Missing authorization in Fastcache by Host.it
Authenticated subscribers can modify .htaccess page-cache rules due to missing authorization checks in the Fastcache WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-107763?
CVE-2026-107763 is a medium-severity missing authorization vulnerability in hostspa Fastcache by Host.it, published on 17 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-107763?
How do I fix CVE-2026-107763?
No fix has been published for CVE-2026-107763 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-107763 being exploited?
There is no known exploitation of CVE-2026-107763 in the wild and no public exploit code.
Sources
Also known as GHSA-2x22-cf39-j42v.