CVE-2026-16540

The Simply Schedule Appointments WordPress plugin before 1.6.12.6 does not correctly restrict a bulk appointment operation to the requester's own records, allowing unauthenticated users to retrieve the personal data of all appointments across the site and, on premium editions, to permanently delete them.

CVSS v3.1

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

EPSS

0.42% chance of exploitation in the next 30 days, 35th percentile

Published

2026-08-02

Updated

2026-08-03

Proof-of-concept exploits (2)

• https://wpscan.com/vulnerability/c3829294-c388-4151-9e25-a3eac7b1f1c6/
• huseyn0vs/CVE-2026-16540-SimplyScheduleAppointments1★ · 2026-07-22

References

• CVE Record
• NVD entry

Related

• CVE-2026-16539
• CVE-2026-16541
• CVE-2026-16538
• CVE-2026-16546
• CVE-2026-16537
• CVE-2026-16547