CVE-2025-49311 WordPress The Events Calendar Countdown Addon plugin <= 1.4.9 - Cross Site Scripting (XSS) Vulnerability
Stored XSS in The Events Calendar Countdown Addon allows attackers to inject malicious scripts, potentially leading to session hijacking or site defacement.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-49311?
CVE-2025-49311 is a medium-severity cross-site scripting vulnerability in CoolHappy The Events Calendar Countdown Addon, published on 6 Jun 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in CoolHappy The Events Calendar Countdown Addon countdown-for-the-events-calendar allows Stored XSS.This issue affects The Events Calendar Countdown Addon: from n/a through <= 1.4.9.
Weakness: CWE-79
Which versions are affected by CVE-2025-49311?
How do I fix CVE-2025-49311?
No fix has been published for CVE-2025-49311 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-49311 being exploited?
There is no known exploitation of CVE-2025-49311 in the wild and no public exploit code.
Sources
Also known as GHSA-6m24-69jj-qmwg.