Is CVE-2026-84764 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-84764 being exploited in the wild.

How severe is CVE-2026-84764?

High severity, with a CVSS score of 8.8, published 2 September 2026.

Which products and versions are affected?

NSquared Simply Schedule Appointments <= 1.6.12.23.

Is there a fix for CVE-2026-84764?

A patch was published on 2026-09-02: Patched in version 1.6.12.24 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-84764 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-84764?

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.

CVE-2026-84764: NSquared Simply Schedule Appointments CSRF

Q: Is there a fix for CVE-2026-84764?

A patch was published on 2026-09-02: Patched in version 1.6.12.24 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-84764 attacked?

It is attacked over the network, in a web application.

Q: Am I affected by CVE-2026-84764?

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.

CVE-2026-84764 · Severity: high · CVSS 8.8 · Published 2026-09-02

Simply Schedule Appointments is a WordPress plugin that allows users to schedule appointments through their websites. An unauthenticated attacker can craft a malicious page that tricks logged-in site administrators into performing unintended actions, such as creating or modifying appointments, without their knowledge or consent. This could lead to disruption of appointment scheduling services or unauthorized administrative changes.

Quick answers

Is CVE-2026-84764 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-84764 being exploited in the wild.
How severe is CVE-2026-84764?: High severity, with a CVSS score of 8.8, published 2 September 2026.
Which products and versions are affected?: NSquared Simply Schedule Appointments <= 1.6.12.23.
Is there a fix for CVE-2026-84764?: A patch was published on 2026-09-02: Patched in version 1.6.12.24 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-84764 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-84764?: 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

A Cross-Site Request Forgery (CSRF) vulnerability exists in Simply Schedule Appointments plugin versions up to 1.6.12.23 that fails to properly validate or sanitize request origins before executing sensitive actions. The vulnerability requires no authentication to initiate but does require user interaction—specifically, a logged-in user (such as a site administrator) must be tricked into visiting a malicious webpage or clicking a crafted link. An attacker can exploit this to perform arbitrary actions within the plugin's scope, such as modifying appointments or settings. The vulnerability was patched in version 1.6.12.24.

Affected products

NSquared Simply Schedule Appointments <= 1.6.12.23

Timeline

2026-08-10: disclosed: Reported by Anthony Green of Greenhat Security
2026-09-02: advisory: Published by Patchstack and assigned CVE-2026-84764
2026-09-02: patched: Patched in version 1.6.12.24

References

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