Vulnerability · Published Jun 26, 2025 · Assigned by Wordfence

CVE-2025-5929The Countdown <= 2.0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via clientId Parameter

Medium 6.4

In plain English

A medium-severity cross-site scripting in The Countdown – Block Countdown Timer from zourbuth. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).

Severity (CVSS 3.1)6.4Medium

Exploit odds (30 days)0.2%top 84.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
zourbuth	The Countdown – Block Countdown Timer	0 – through 2.0.1

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

In plain English

Official description

Affected products (as reported)

References