CVE-2026-16063 Event Booking Manager for WooCommerce < 5.3.7 - Author+ Stored XSS via Event Timeline Content
Authors can inject JavaScript into event timelines, executing code in visitors' browsers, including administrators, via the Event Booking Manager plugin.
- 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-2026-16063?
CVE-2026-16063 is a medium-severity cross-site scripting vulnerability in Unknown Event Booking Manager for WooCommerce, published on 2 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Event Booking Manager for WooCommerce WordPress plugin before 5.3.7 does not sanitise or escape event timeline content submitted by users with post-editing access before storing it and rendering it on the public event page, allowing users with the Author role and above to inject arbitrary JavaScript that executes in the browser of any visitor viewing the event, including administrators.
Weakness: CWE-79
Which versions are affected by CVE-2026-16063?
How do I fix CVE-2026-16063?
No fix has been published for CVE-2026-16063 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-2026-16063 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16063 exists.
Sources
Also known as GHSA-c58x-hvfg-9vjh.