CVE-2025-9850CWE-79cross-site-scripting

CVE-2025-9850

Medium · published September 11, 2025

CVSS v3.1
6.4
EPSS
0%
Percentile
9.0
In the wild
Unconfirmed
What it is

The Evenium plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'evenium_single_event' shortcode in all versions up to, and including, 1.3.11 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00197 · 9.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-09-11T12:15Z
References (2)
https://plugins.trac.wordpress.org/browser/evenium/trunk/src/evenium_quicktags.php#L27 · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/394732cc-94b5-4fbf-bd78-da18791724be?source=cve · [email protected]
EPSS history
Timeline
  • 11 SEP 07:24Z
    Evenium <= 1.3.11 - Authenticated (Contributor+) Stored Cross-Site Scripting
    cvelistv5