Medium severity · published Oct 14, 2026
CVE-2026-16495
Countdown Timer – Widget Countdown <= 3.0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'redirect_url' Shortcode Attribute
6.4
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CT
Countdown Timer – Widget Countdown · wpdevart
3.0.0 through 3.0.1 · source: vendor
Affected product
CT
Countdown Timer – Widget Countdown
wpdevart
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16495
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16495
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/7d757080-d2dc-49f9-bdc6-dba762a8f981?source=cve
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/widget-countdown/tags/3.0.1/includes/legacy/front_end.php#L169
More from Countdown Timer – Widget Countdown
6.4
CVE-2025-14555
Countdown Timer - Widget Countdown <= 2.7.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode