Vulnerability in Codepeople Appointment Hour Booking

CVE-2026-66679

Unauthenticated Broken Access Control in Appointment Hour Booking <= 1.5.91 versions.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (26.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-66679: held from 0.003 to 0.004.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-66679?
CVE-2026-66679 is a medium-severity vulnerability in Codepeople Appointment Hour Booking, classified under Improper Validation of Specified Quantity in Input. CVSS score: 6.5/10. Published 2026-08-18.
How severe is CVE-2026-66679?
Medium severity. CVSS v3 base score is 6.5 out of 10.