CVE-2026-107763 json
Fastcache by Host.it <= 1.7.5 - Missing Authorization to Authenticated (Subscriber+) Arbitrary .htaccess Page-Cache Block Modification via updateSettings() admin_action_update Hook
published 2026-10-17 23 d ago modified 2026-10-19 21 d ago also EUVD-2026-103212
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 22 d ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- hostspa Fastcache by Host.it
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/1f0b4db0-2ccd-47e8-8f40-82e97726f815?source=cve
- plugins.trac.wordpress.org /browser/fastcache-by-host-it/tags/1.7.4/src/Admin.php#L304
- plugins.trac.wordpress.org /browser/fastcache-by-host-it/tags/1.7.4/src/Admin.php#L44
- plugins.trac.wordpress.org /browser/fastcache-by-host-it/tags/1.7.4/src/Core/Platform/Utility.php#L372
- plugins.trac.wordpress.org /changeset?reponame=&old=3737013%40fastcache-by-host-it&new=3737013%40fastcache-by-host-it
Sources
- CVE List CVE-2026-107763
- NVD CVE-2026-107763
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.