Quick answers
- Is CVE-2026-42686 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-42686 being exploited in the wild.
- How severe is CVE-2026-42686?
- High severity, with a CVSS score of 7.1, published 15 June 2026.
- Which products and versions are affected?
- EventPrime <= 4.3.2.1.
- Is there a fix for CVE-2026-42686?
- A patch was published on 2026-05-24: Version 4.3.2.2 released to address the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-42686 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-42686?
- Check whether you run EventPrime 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
A Cross-Site Scripting (XSS) vulnerability exists in the EventPrime plugin for WordPress (versions 4.3.2.1 and below) due to improper neutralization of input during web page generation (CWE-79). The vulnerability requires Subscriber-level authentication to exploit. An attacker can inject malicious HTML or JavaScript payloads that execute in the context of other users' browsers. While the CVSS vector indicates a high impact on availability, the primary risk involves the injection of redirects or unauthorized content. The issue is resolved in version 4.3.2.2.
Affected products
- EventPrime EventPrime <= 4.3.2.1
Timeline
- 2026-04-24: other: Reported by researcher hhhai
- 2026-05-24: advisory: Initial advisory published by Patchstack
- 2026-06-15: disclosed: CVE published to NVD
- 2026-05-24: patched: Version 4.3.2.2 released to address the vulnerability