Vulnerability · Published Aug 3, 2026 · Assigned by WPScan

CVE-2026-15254Simply Schedule Appointments < 1.6.12.11 - Contributor+ Sensitive Data Disclosure via Admin Shortcode

Medium 6.5

In plain English

A medium-severity incorrect authorization in Simply Schedule Appointments from Unknown. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 72.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Simply Schedule Appointments	0 – before 1.6.12.11

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

https://wpscan.com/vulnerability/551554a8-12fb-4eb5-bd24-ae627b58dc3b/ exploit, vdb-entry, technical-description