# CVE-2026-94673: Simply Schedule Appointments IDOR vulnerability

Source: https://junglewise.ai/threats/cve-2026-94673-unauthenticated-insecure-direct-object-references-idor-in-simply  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-94673 · Severity: medium · CVSS 5.3 · Published 2026-09-30

Simply Schedule Appointments is a WordPress plugin for managing appointment scheduling on websites. An unauthenticated attacker can access other users' appointment data and personal information by manipulating object IDs in URLs, exposing sensitive booking details without authentication.

Technologies: [NSquared Simply Schedule Appointments](https://junglewise.ai/threats/technologies/nsquared-simply-schedule-appointments). Vendors: [NSquared](https://junglewise.ai/threats/vendors/nsquared).

## Quick answers

**Is CVE-2026-94673 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-94673 being exploited in the wild.

**How severe is CVE-2026-94673?** Medium severity, with a CVSS score of 5.3, published 30 September 2026.

**Which products and versions are affected?** NSquared Simply Schedule Appointments <=1.6.12.31.

**Is there a fix for CVE-2026-94673?** A patch was published on 2026-09-24: Fixed in version 1.6.12.33 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-94673 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-94673?** 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.

## Technical details

An Insecure Direct Object References (IDOR) vulnerability in Simply Schedule Appointments allows unauthenticated attackers to enumerate and access arbitrary appointment records by modifying ID parameters in API requests or URLs. The vulnerability requires no authentication or user interaction; attackers can directly reference other users' objects to retrieve sensitive booking information. A patch is available in version 1.6.12.33.

## Affected products

- NSquared Simply Schedule Appointments <=1.6.12.31

## Timeline

- 2026-09-24: disclosed
- 2026-09-24: patched: Fixed in version 1.6.12.33

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/simply-schedule-appointments/vulnerability/wordpress-simply-schedule-appointments-plugin-1-6-12-31-insecure-direct-object-references-idor-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/simply-schedule-appointments/vulnerability/wordpress-simply-schedule-appointments-plugin-1-6-12-31-insecure-direct-object-references-idor-vulnerability?_s_id=cve)

## Related threats

- [NSquared Simply Schedule Appointments broken access control](https://junglewise.ai/threats/cve-2026-125437-missing-authorization-vulnerability-in-nsquared-simply-schedule)
- [NSquared Simply Schedule Appointments stored cross-site scripting](https://junglewise.ai/threats/cve-2026-110382-improper-neutralization-of-input-during-web-page-generation)
- [NSquared Simply Schedule Appointments IDOR vulnerability](https://junglewise.ai/threats/cve-2026-110381-authorization-bypass-through-user-controlled-key-vulnerability)
- [Simply Schedule Appointments broken access control](https://junglewise.ai/threats/cve-2026-94074-unauthenticated-broken-access-control-in-simply-schedule)