Is CVE-2026-110381 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-110381 being exploited in the wild.

How severe is CVE-2026-110381?

Medium severity, with a CVSS score of 6.3, published 15 October 2026.

Which products and versions are affected?

NSquared Simply Schedule Appointments through 1.6.12.35.

Is there a fix for CVE-2026-110381?

Yes: fixed in 1.6.12.37. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-110381 attacked?

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

Am I affected by CVE-2026-110381?

Check whether you run NSquared Simply Schedule Appointments at an affected version. 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-2026-110381: NSquared Simply Schedule Appointments IDOR vulnerability

CVE-2026-110381 · Severity: medium · CVSS 6.3 · Published 2026-10-15

Simply Schedule Appointments is a WordPress plugin that manages appointment booking. An authorization bypass vulnerability allows attackers with contributor-level access to view and potentially manipulate appointment data belonging to other users by changing object IDs in requests, potentially exposing sensitive scheduling and personal information.

Technologies: NSquared Simply Schedule Appointments. Vendors: NSquared.

Quick answers

Is CVE-2026-110381 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-110381 being exploited in the wild.
How severe is CVE-2026-110381?: Medium severity, with a CVSS score of 6.3, published 15 October 2026.
Which products and versions are affected?: NSquared Simply Schedule Appointments through 1.6.12.35.
Is there a fix for CVE-2026-110381?: Yes: fixed in 1.6.12.37. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-110381 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-110381?: Check whether you run NSquared Simply Schedule Appointments at an affected version. 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.

How to fix

Fixed in: 1.6.12.37

Technical details

An Insecure Direct Object References (IDOR) vulnerability exists in Simply Schedule Appointments through version 1.6.12.35, where access control checks fail to properly validate that users are authorized to access specific appointment objects. An attacker with contributor privileges can modify ID parameters in requests to access or modify appointments they do not own. The vulnerability requires authentication but allows lateral privilege abuse within the plugin.

Affected products

NSquared Simply Schedule Appointments through 1.6.12.35

Timeline

2026-09-28: disclosed: Reported by ssophiz
2026-10-15: advisory: Published by Patchstack

References

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