CVE-2025-5929
The Countdown <= 2.0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via clientId Parameter
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The The Countdown plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘clientId’ parameter in all versions up to, and including, 2.0.1 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.
| CWE | CWE-79 |
| Vendor | zourbuth |
| Product | the countdown – block countdown timer |
| Published | Jun 26, 2025 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
zourbuth / The Countdown – Block Countdown Timer
0 ≤ 2.0.1
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/34578df8-661c-4c54-b06c-e1d787ca3c55?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/the-countdown/tags/2.0.1/the-countdown.php#L95 wordpress.org: https://wordpress.org/plugins/the-countdown/#developers
Credits
Peter Thaleikis