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CVE-2026-16495

MEDIUM 6.4 CVSS 3.1
Published
October 14, 2026
Last modified
October 14, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The Countdown Timer – Widget Countdown plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'redirect_url' Shortcode Attribute in all versions up to, and including, 3.0.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected WordPress components

  • Countdown Timer – Widget Countdown Plugin · widget-countdown
    Confirmed match Active
    From 3.0.0 (including) to 3.0.1 (including)
    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

  • wpdevart Countdown Timer – Widget Countdown — From 3.0.0 (including) to 3.0.1 (including)

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/widget-countdown/tags/3.0.1/includes/legacy/front_end.php#L169
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/7d757080-d2dc-49f9-bdc6-dba762a8f981?source=cve
  • nvd.nist.gov Official NVD record