Fastcache by Host.it: Missing Authorization Allows .htaccess Cache Rule Changes
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
The Fastcache by Host.it plugin for WordPress does not verify that a user is authorized to perform an action (CWE-862). In all versions through 1.7.5, authenticated attackers with Subscriber-level access or higher can add or remove the plugin's page-cache rewrite rules in the site's root .htaccess file. The CVSS 3.1 base score is 4.3 (MEDIUM).
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version is listed for Fastcache by Host.it (status: no_fix_listed). Until a fix is available, deactivate the plugin or limit Subscriber-level accounts to trusted users.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-18 Threatist record created from CVE-2026-107763
- 2026-10-18 Alias added: GHSA-2x22-cf39-j42v
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1f0b4db0-2ccd-47e8-8f40-82e97726f815?source=cve
- https://plugins.trac.wordpress.org/browser/fastcache-by-host-it/tags/1.7.4/src/Admin.php#L304
- https://plugins.trac.wordpress.org/browser/fastcache-by-host-it/tags/1.7.4/src/Admin.php#L44
- https://plugins.trac.wordpress.org/browser/fastcache-by-host-it/tags/1.7.4/src/Core/Platform/Utility.php#L372
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3737013%40fastcache-by-host-it&new=3737013%40fastcache-by-host-it
More hostspa vulnerabilities
- TI-2026-70244 Fastcache by Host.it: Authenticated .htaccess Code Injection CVSS 3.1HIGH 7.2
Sources
- CVE-2026-107763 · CVE Program
- CVE-2026-107763 · NVD
- FIRST EPSS
- GHSA-2x22-cf39-j42v · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences