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Threat intelligence

Event Organiser <= 3.12.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via eo_events Shortcode

CVE-2026-2387 · event-organiser

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Event Organiser at a vulnerable version. How SiteRespond intelligence works

Vulnerability
Event Organiser <= 3.12.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via eo_events Shortcode
Affected software
event-organiser(Plugin)
Affected versions
  • ≤ 3.12.9
Authentication
Authenticated (see advisory title)
Vulnerability type
Cross-site scripting
Published
30 June 2026
CISA KEV
Not listed in CISA KEV at last catalog refresh
Impact
May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source

Data imported from Wordfence Intelligence (advisory 3f417afd-2822-412f-b68a-f09c013d6049). Methodology and redistribution notes

Check whether your installed version is affected

SiteRespond Defence matches your installed Event Organiser version against this catalog when the Defence plugin is connected to your WordPress site.