Stored Cross-Site Scripting in Countdown Plugin for WordPress
CVE-2025-5929

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
The Countdown – Block Countdown Timer
Vendor
CVE Published:
26 June 2025

What is CVE-2025-5929?

The Countdown plugin for WordPress has a vulnerability that allows authenticated users with Contributor-level access and above to exploit the 'clientId' parameter. Due to insufficient input sanitization and output escaping, attackers can inject arbitrary web scripts. This results in malicious scripts executing whenever a user accesses the compromised pages, potentially leading to harmful actions on behalf of the user. Website administrators are urged to update their Countdown plugin to the latest version to mitigate this vulnerability.

Affected Version(s)

The Countdown – Block Countdown Timer * <= 2.0.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/the-countdown/...
https://wordpress.org/plugins/the-countdown/#developers

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Peter Thaleikis
.
CVE-2025-5929 : Stored Cross-Site Scripting in Countdown Plugin for WordPress