Stored Cross-Site Scripting in Evenium Plugin for WordPress
CVE-2025-9850

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Evenium
Vendor
CVE Published:
11 September 2025

What is CVE-2025-9850?

The Evenium plugin for WordPress is susceptible to Stored Cross-Site Scripting via the 'evenium_single_event' shortcode due to inadequate input sanitization and output escaping on user-supplied attributes. This vulnerability allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages, leading to execution when other users access the compromised pages. Proper security measures should be implemented to protect against this risk.

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Affected Version(s)

Evenium * <= 1.3.11

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/evenium/trunk/...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Peter Thaleikis
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