Quick answers
- Is CVE-2026-111464 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-111464 being exploited in the wild.
- How severe is CVE-2026-111464?
- Medium severity, with a CVSS score of 5.9, published 3 November 2026.
- Which products and versions are affected?
- WP Media WP Fastest Cache up to and including 1.5.3.
- Is there a fix for CVE-2026-111464?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-111464 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-111464?
- Check whether you run WP Media WP Fastest Cache at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an information disclosure flaw in the caching layer: the plugin caches HTTP responses from wp-activate.php without honoring no-store/no-cache headers, the wp-activate-* cookie, or the WP_INSTALLING constant, resulting in credential-bearing activation URLs being written to publicly accessible cache files. An unauthenticated attacker can retrieve cached activation responses to extract plaintext usernames and auto-generated passwords. Exploitation requires a WordPress Multisite subdirectory installation with user and site registration enabled, and the credentials are only exposed after a legitimate registrant completes their activation flow.
Affected products
- WP Media WP Fastest Cache up to and including 1.5.3
Timeline
- 2026-11-03: disclosed