# CVE-2026-42691: EventPrime Event Calendar Management authorization bypass in access control

Source: https://junglewise.ai/threats/cve-2026-42691-authorization-bypass-through-user-controlled-key-vulnerability-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-29. Updated: 2026-10-29  
License: CC BY 4.0 with a link back

CVE-2026-42691 · Severity: medium · CVSS 5.4 · Published 2026-10-29

EventPrime is a WordPress plugin for managing event calendars and registrations. This authorization bypass vulnerability allows users with subscriber-level accounts to access pages and perform actions they should not be permitted to, potentially viewing other users' event data or making unauthorized changes.

Vendors: [EventPrime](https://junglewise.ai/threats/vendors/eventprime).

## Quick answers

**Is CVE-2026-42691 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-42691 being exploited in the wild.

**How severe is CVE-2026-42691?** Medium severity, with a CVSS score of 5.4, published 29 October 2026.

**Which products and versions are affected?** EventPrime Event Calendar Management through 4.3.6.0.

**Is there a fix for CVE-2026-42691?** Yes: fixed in 4.3.6.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-42691 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-42691?** Check whether you run EventPrime Event Calendar Management 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 4.3.6.1

## Technical details

A broken access control vulnerability in EventPrime's user-controlled key handling allows privilege abuse. Authenticated subscribers can bypass authorization checks through manipulated user-controlled keys to access restricted functionality and data. A patch is available in version 4.3.6.1.

## Affected products

- EventPrime Event Calendar Management through 4.3.6.0

## Timeline

- 2026-10-29: disclosed
- 2026-10-29: patched

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://patchstack.com/database/wordpress/plugin/eventprime-event-calendar-management/vulnerability/wordpress-eventprime-plugin-4-3-6-0-broken-access-control-vulnerability?_s_id=cve](https://patchstack.com/database/wordpress/plugin/eventprime-event-calendar-management/vulnerability/wordpress-eventprime-plugin-4-3-6-0-broken-access-control-vulnerability?_s_id=cve)