EventON – Events Calendar <= 2.5.10 - Unauthenticated Reflected Cross-Site Scripting via 'l' URL Variable
- ID
- WPSEC-2026-2168
- Plugin
- EventON – Events Calendar (eventon-lite)
- Affected
- all versions before 2.5.11
- Remediation
- Update to 2.5.11 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-31
- Attack surface
- EventON – Events Calendar on WPSec AttackSurface
- Fix released
- Published
Description
The EventON – Events Calendar plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the language ('l') segment of the single event page URL variable in all versions up to, and including, 2.5.10, due to insufficient input sanitization of the language value, which is set as the global calendar language and then used to build event permalinks that are printed without escaping in the event schema markup. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
References
- https://wpsec.com/vuln/WPSEC-2026-2168/
- https://plugins.svn.wordpress.org/eventon-lite/tags/2.5.11/
- https://wordpress.org/plugins/eventon-lite/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS