CVE-2025-5929

MEDIUM

The Countdown plugin for WordPress <= 2.0.1 - Authenticated Stored Cross-Site Scripting via clientId Parameter

Title source: llm
STIX 2.1

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.

References (3)

Core 3

Scores

CVSS v3 6.4
EPSS 0.0020
EPSS Percentile 9.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (2)
zourbuth/The Countdown – Block Countdown Timer < 2.0.1
zourbuth/the_countdown < 2.0.1
Published Jun 26, 2025
Tracked Since Feb 18, 2026