CVE-2026-75983 Privilege escalation in Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
Authenticated attackers with user ID 1 can escalate privileges to administrator and execute code if the account was demoted from admin.
- 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-2026-75983?
CVE-2026-75983 is a high-severity vulnerability in arraytics Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.1.23. This is due to the `PermissionManager::manage_permissions()` function being registered as a callback on WordPress core's `map_meta_cap` filter and unconditionally returning the always-true `'exist'` primitive for every capability check whenever the evaluated user ID is 1, without scoping this behavior to plugin-specific capabilities. This makes it possible for authenticated attackers whose account is user ID 1, even subscribers, to pass every WordPress capability check, including `manage_options`, `edit_plugins`, `edit_themes`, `promote_users`, and `update_core`, thereby elevating their privileges to administrator-equivalent power and achieving full site takeover, including remote code execution via the plugin and theme editors. Exploitation is only impactful when user ID 1 has been deliberately demoted to a lower-privilege role as a common administrator-account hardening practice; on default installations where user ID 1 retains the administrator role, no incremental privilege gain occurs.
Weakness: CWE-269
Which versions are affected by CVE-2026-75983?
How do I fix CVE-2026-75983?
No fix has been published for CVE-2026-75983 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-75983 being exploited?
There is no known exploitation of CVE-2026-75983 in the wild and no public exploit code.
Sources
Also known as GHSA-4pw8-cp9g-3xr7.