CVE-2026-15254 Simply Schedule Appointments < 1.6.12.11 - Contributor+ Sensitive Data Disclosure via Admin Shortcode
Contributors can access all customer appointment records via an admin shortcode due to missing capability checks in the Simply Schedule Appointments plugin.
- 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-2026-15254?
CVE-2026-15254 is a medium-severity missing authorization vulnerability in Unknown Simply Schedule Appointments, published on 3 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Simply Schedule Appointments WordPress plugin before 1.6.12.11 does not perform a capability check on an administrative appointment-listing shortcode, and its per-user result scoping fails open for non-staff users, allowing users with the Contributor role and above to disclose all customers' appointment records, including names, email addresses, phone numbers and notes, across the whole site.
Weakness: CWE-863
Which versions are affected by CVE-2026-15254?
How do I fix CVE-2026-15254?
No fix has been published for CVE-2026-15254 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-15254 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15254 exists.
Sources
Also known as GHSA-7652-g22q-736f.