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Vulnerabilities

Vulnerability · CVE-2026-111464

WP Fastest Cache <= 1.5.3 - Unauthenticated Sensitive Information Exposure via Cached wp-activate.php Response

Published Nov 3, 2026 · catalog updated Nov 3, 2026 · WP Fastest Cache – WordPress Cache Plugin

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-111464. EPSS is 0.42%. Act only if a listed version of WP Fastest Cache – WordPress Cache Plugin is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium5.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.42%
Remediation
Version ranges on file
Affected products
stated named in the record · vendor emrevona WP Fastest Cache – WordPress Cache Plugin

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • stated named in the record<= 1.5.3
  • vendor emrevona WP Fastest Cache – WordPress Cache Pluginversion unspecified

How to fix CVE-2026-111464

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-111464. EPSS is 0.42%. Act only if a listed version of WP Fastest Cache – WordPress Cache Plugin is installed.

Which versions are affected?

Compare what you have installed with named in the record <= 1.5.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-524. EPSS 0.42%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 3, 2026 · OpenCVE

    Detected

    CVE-2026-111464 is named on the public OpenCVE page.

  2. Nov 3, 2026 · CVE.org

    Updated

    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 poss

Sources

  • CVE.orgVulnerability recordCVE-2026-111464

    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_INST

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-111464

    30-day exploitation probability 0.42%

    first.org
  • OpenCVEVendor advisoryCVE-2026-111464

    CVE-2026-111464 is named on the public OpenCVE page.

    opencve.io
  • Tenable CVE DatabaseVulnerability recordCVE-2026-111464

    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 poss

    tenable.com

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgNov 4, 2026
  • Tenable CVE DatabaseNov 3, 2026
  • OpenCVENov 3, 2026