CVE-2026-42384: NSquared Simply Schedule Appointments sensitive data exposure

CVE-2026-42384 · Severity: high · CVSS 7.5 · Published 2026-06-15

Simply Schedule Appointments is a WordPress plugin used by businesses to manage client bookings and scheduling. A security flaw in versions older than 1.6.11.2 allows unauthorized individuals to access sensitive information that should be private. This could lead to the exposure of customer data or internal system details, potentially facilitating further attacks on the website.

Quick answers

Is CVE-2026-42384 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-42384 being exploited in the wild.
How severe is CVE-2026-42384?
High severity, with a CVSS score of 7.5, published 15 June 2026.
Which products and versions are affected?
NSquared Simply Schedule Appointments < 1.6.11.2.
Is there a fix for CVE-2026-42384?
A patch was published on 2026-04-27: Patch released in version 1.6.11.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-42384 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-42384?
Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The Simply Schedule Appointments plugin for WordPress is vulnerable to sensitive data exposure (CWE-201) in versions prior to 1.6.11.2. The vulnerability allows an unauthenticated remote attacker to access sensitive information due to improper data handling within the plugin's components. With a CVSS score of 7.5, the flaw is exploitable over the network without user interaction or administrative privileges. Attackers can leverage this exposure to gather information that may assist in further compromising the WordPress environment. Users are advised to update to version 1.6.11.2 or later to remediate the issue.

Affected products

  • NSquared Simply Schedule Appointments < 1.6.11.2

Timeline

  • 2026-03-07: other: Reported by Jakub Herman
  • 2026-04-27: advisory: Patchstack advisory published
  • 2026-04-27: patched: Patch released in version 1.6.11.2
  • 2026-06-15: disclosed: CVE published to NVD

References

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