CVE-2025-14548 Calendar <= 1.3.16 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'event_desc'
Authenticated contributors can inject scripts via event descriptions if admins enable lower-privilege event management, leading to XSS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-14548?
CVE-2025-14548 is a medium-severity cross-site scripting vulnerability in kieranoshea Calendar, published on 23 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Calendar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'event_desc' parameter in all versions up to, and including, 1.3.16 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, granted they can convince an administrator to enable lower privilege users to manage calendar events via the plugin settings.
Weakness: CWE-79
Which versions are affected by CVE-2025-14548?
How do I fix CVE-2025-14548?
No fix has been published for CVE-2025-14548 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-2025-14548 being exploited?
There is no known exploitation of CVE-2025-14548 in the wild and no public exploit code.
Sources
Also known as GHSA-hj2f-hxvq-38r7.