CVE-2026-111464: The WP Fastest Cache plugin for WordPress is vulnerable to Sensitive Information Exposure in all
Source GCVE Database
Not known to be exploited · CVSS 5.9 Medium.
Data as of 3 Nov 2026, 03:59 UTC
Thin evidence
One scorer or none| CNA (Wordfence) | CVSS 3.1 | 5.9 |
|---|
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| emrevonaWP Fastest Cache – WordPress Cache Plugin | Affected
| Fixed in– |
AI-suggested
Users should verify vendor advisories for updates. Until a fix is available, consider disabling public user and site registration on Multisite installations or disabling the WP Fastest Cache plugin to prevent caching of sensitive activation responses.
Description
The WP Fastest Cache plugin for WordPress versions up to and including 1.5.3 improperly caches the response of wp-activate.php, exposing sensitive information. This caching ignores no-store/no-cache headers, relevant cookies, and installation state, resulting in publicly accessible cache files containing plaintext credentials of the most recently activated Multisite user. Exploitation requires a Multisite subdirectory setup with public user and site registration enabled and only occurs after a legitimate user activates their account.
References
- nvd.nist.gov/vuln/detail/CVE-2026-111464 (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-fastest-cache/tags/1.5.2/inc/cache.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-fastest-cache/tags/1.5.2/inc/cache.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-fastest-cache/tags/1.5.2/inc/cache.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-fastest-cache/tags/1.5.2/inc/cache.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/wp-fastest-cache/tags/1.5.2/inc/cache.php (opens in a new tab)
- plugins.trac.wordpress.org/changeset/3749897/wp-fastest-cache (opens in a new tab)
- wordfence.com/threat-intel/vulnerabilities/id/83539a88-b90e-49f0-a599-b3f83b2d97b9?source=cve (opens in a new tab)