PT-2025-26928 · WordPress · Countdown

Peter Thaleikis · Published 2025-06-26 · Updated 2025-07-08 · CVE-2025-5929

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Countdown plugin for WordPress versions up to, and including, 2.0.1

Description: The issue is related to Stored Cross-Site Scripting via the clientId parameter due to insufficient input sanitization and output escaping. This allows 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.

Recommendations: For versions up to, and including, 2.0.1, consider disabling the clientId parameter until a patch is available to prevent exploitation. Restrict access to pages that may have been injected with malicious scripts to minimize the risk of execution. Update to a version that includes the necessary input sanitization and output escaping fixes to fully resolve the issue.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-5929

Affected Products

Countdown

References · 11

• https://osv.dev/vulnerability/CVE-2025-5929 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-5929 · Security Note
• https://t.me/cvenotify/127868 · Telegram Post
• https://plugins.trac.wordpress.org/browser/the-countdown/tags/2.0.1/the-countdown.php#L95 · Note
• https://twitter.com/CVEnew/status/1938081851156935100 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/34578df8-661c-4c54-b06c-e1d787ca3c55?source=cve · Note
• https://twitter.com/VulmonFeeds/status/1938108263007948998 · Twitter Post
• https://wordpress.org/plugins/the-countdown/#developers · Note
• https://t.me/cvenotify/126718 · Telegram Post
• https://t.me/cvenotify/127958 · Telegram Post
• https://t.me/cvetracker/27092 · Telegram Post