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CVE-2026-18464 – Unauthenticated Denial of Service – WP Maps Pro WordPress Plugin before 6.1.3

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Summary

CVE-2026-18464 is an unauthenticated denial-of-service vulnerability (CWE-400: Uncontrolled Resource Consumption) in the WP Maps Pro WordPress plugin. In all versions before 6.1.3, an AJAX action reachable by unauthenticated users lacks a capability check, allowing an attacker to trigger uncontrolled recursion that exhausts server resources. The issue is rated High severity (CVSS 7.5).

Technical details

  • Root cause: An AJAX action exposed by the plugin does not perform a capability check and is accessible to unauthenticated users.
  • Trigger conditions: An attacker sends requests to the affected AJAX action, which drives uncontrolled recursion.
  • Attack vector: Network; no authentication and no user interaction required.
  • Impact: Exhaustion of server resources leading to denial of service and disruption of site availability. No impact to confidentiality or integrity.

Affected software

  • WP Maps Pro WordPress plugin: all versions before 6.1.3.

Severity

  • CVSS v3.1 base score: 7.5 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Mitigation and recommended actions

  • Immediate: Upgrade WP Maps Pro to version 6.1.3 or later.
  • If no patch can be applied: Restrict network access to the plugin’s AJAX endpoint (for example via a WAF rule or web server access control), or disable the plugin until it can be updated.

References

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