Vulnerabilities / Event Organiser / WPSEC-2026-1675
Event Organiser <= 3.12.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via %event_thumbnail% Shortcode Template Tag
Medium 6.4
CWE-79Fixed in 3.12.11
- ID
- WPSEC-2026-1675
- Plugin
- Event Organiser (event-organiser)
- Affected
- all versions before 3.12.11
- Remediation
- Update to 3.12.11 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-27
- Attack surface
- Event Organiser on WPSec AttackSurface
- Fix released
- Published
Description
The Event Organiser plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the %event_thumbnail% template tag in the event list shortcode in all versions up to, and including, 3.12.10 due to insufficient input sanitization and output escaping on user-supplied image attributes, which are HTML-entity-decoded and passed into the thumbnail img tag. 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.
References
- https://wpsec.com/vuln/WPSEC-2026-1675/
- https://plugins.svn.wordpress.org/event-organiser/tags/3.12.11/
- https://wordpress.org/plugins/event-organiser/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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