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