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CVE-2026-111464

MEDIUM 5.9 CVSS 3.1
Published
November 3, 2026
Last modified
November 3, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-524
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

The WP Fastest Cache plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.5.3. The plugin caches the response of Core’s wp-activate.php without honoring its no-store/no-cache headers, the wp-activate-* cookie, or the WP_INSTALLING state, writing the credential-bearing activation response to a publicly accessible cache file. This makes it possible for unauthenticated attackers to retrieve the plaintext username and twelve-character password of the most recently activated Multisite registrant from that cached wp-activate.php response. Exploitation requires a Multisite subdirectory installation with public user and site registration enabled, and the credentials are only exposed after a genuine registrant follows their activation link.

Affected WordPress components

  • WP Fastest Cache – WordPress Cache Plugin Plugin · wp-fastest-cache
    Confirmed match Active
    Up to and including 1.5.3
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • emrevona WP Fastest Cache – WordPress Cache Plugin — Up to and including 1.5.3

References