---
id: "CVE-2026-42691"
kind: "vulnerability"
aliases: ["CVE-2026-42691"]
title: "EventPrime WordPress calendar plugin: authorization bypass lets users abuse privileges"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["event-calendar", "eventprime", "package", "wordpress"]
not_affected_if: ["plugin-not-installed"]
published_at: "2026-10-29T15:17:23+00:00"
first_seen_at: "2026-10-29T15:25:40+00:00"
updated_at: "2026-10-29T15:26:47+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42691", "first_seen_at": "2026-10-29T15:25:40+00:00"}]
---

# EventPrime WordPress calendar plugin: authorization bypass lets users abuse privileges

The EventPrime event calendar plugin for WordPress has an authorization bypass caused by a user-controlled key, which allows privilege abuse. The sources say the flaw affects all versions through 4.3.6.0 and rate it medium (CVSS 5.4).

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed EventPrime plugin version in the WordPress admin under Plugins, or in the plugin's main file header.
- Treat any version through `4.3.6.0` as affected; the sources do not give a more precise check.

## Timeline

- 2026-10-29T15:25:40+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-42691

## From the sources

Authorization Bypass Through User-Controlled Key vulnerability in EventPrime EventPrime eventprime-event-calendar-management allows Privilege Abuse.This issue affects EventPrime: from n/a through 4.3.6.0.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_