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TI-2026-12842 Aliases CVE-2026-15254GHSA-7652-g22q-736f

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

Priority MEDIUM 62CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0034 27th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Simply Schedule Appointments (Unknown): 1.6.12.11

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownSimply Schedule Appointmentsbefore 1.6.12.111.6.12.11Patch availableCNA
  • Simply Schedule Appointments VendorUnknown Affected before 1.6.12.11 Fixed in 1.6.12.11 Patch available CNA

Remediation

  • Fix · CNA Simply Schedule Appointments (Unknown) Fixed in 1.6.12.11

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-15254
  2. 2026-10-03 Alias added: GHSA-7652-g22q-736f

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences