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Vulnerability record · CVE-2026-16540 · published 2 August 2026

CVE-2026-16540: Incorrect authorization vulnerability

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.

7.5 CVSS 3.1 High EPSS 0.41% · top 67.7% CWE-863 · Incorrect authorization Deferred
7.5CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
26 Aug 2026Last modified by NVD

Description

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

References

LinkTags
https://wpscan.com/vulnerability/c3829294-c388-4151-9e25-a3eac7b1f1c6/

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Source: NIST National Vulnerability Database (record CVE-2026-16540), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.