CVE-2025-12661 Pollcaster Shortcode Plugin <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Authenticated attackers can inject arbitrary scripts via the height parameter in the Pollcaster Shortcode Plugin, affecting WordPress sites.
- 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-2025-12661?
CVE-2025-12661 is a medium-severity cross-site scripting vulnerability in qzzr Pollcaster Shortcode Plugin, published on 21 Nov 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Pollcaster Shortcode Plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'height' parameter in the 'pollcaster' shortcode in all versions up to, and including, 1.0. This is due to insufficient input sanitization and output escaping on user supplied attributes. 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.
Weakness: CWE-79
Which versions are affected by CVE-2025-12661?
How do I fix CVE-2025-12661?
No fix has been published for CVE-2025-12661 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-2025-12661 being exploited?
There is no known exploitation of CVE-2025-12661 in the wild and no public exploit code.
Sources
Also known as GHSA-mwrx-vgvq-9cf4.