CVE-2026-86839

3.8 lowEPSS 0.2%

Low (3.8). EPSS 0.2% chance of exploitation in the next 30 days.

The Online Scheduling and Appointment Booking System WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authenticated attackers with a staff-level account to view, modify and delete other staff members' appointments and payments, including the associated customer's personal information.

Severity

CVSS 3.1

3.8 low

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-31)
CWE: CWE-639
Published: 2026-09-27
Modified: 2026-09-28
Record from: the NVD, synced 2026-10-19

References

https://wpscan.com/vulnerability/3ab8b879-3ef7-4aa4-8620-1bde99697dcb/

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