CVE-2026-5391 LatePoint <= 5.3.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
Authenticated contributors can inject malicious scripts via shortcode attributes, leading to script execution in victim browsers.
- 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-2026-5391?
CVE-2026-5391 is a medium-severity cross-site scripting vulnerability in Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress, published on 6 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The LatePoint plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'btn_wrapper_classes' attribute of the 'latepoint_resources' shortcode in all versions up to, and including, 5.3.2. This is due to insufficient input sanitization and output escaping in the 'locations' branch of the 'shortcode_latepoint_resources' function. 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-2026-5391?
How do I fix CVE-2026-5391?
No fix has been published for CVE-2026-5391 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-2026-5391 being exploited?
There is no known exploitation of CVE-2026-5391 in the wild and no public exploit code.
Sources
Also known as GHSA-hg94-gfmw-xvqm.