LatePoint Calendar Plugin XSS via button_caption (5.3.0)
CVE-2026-4785 Published on April 8, 2026
LatePoint <= 5.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
The LatePoint Calendar Booking Plugin for Appointments and Events plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'button_caption' parameter in the [latepoint_resources] shortcode in versions up to and including 5.3.0. This is due to insufficient output escaping when the 'items' parameter is set to 'bundles'. 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.
Timeline
Vendor Notified
Disclosed 14 days later.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-4785 has been classified to as a XSS vulnerability or weakness.
Affected Versions
LatePoint – Calendar Booking Plugin for Appointments and Events:- Before and including 5.3.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.