What’s Vulnerable › Vulnerabilities

CVE-2026-2387: Event Organiser <= 3.12.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via eo_events Shortcode

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-01 · updated 2026-07-01
• Weakness: CWE-79

Description

The Event Organiser plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 3.12.9. This is due to the 'eo_events' shortcode accepting attacker-controlled 'no_events' content and rendering it in event list templates without output escaping. 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.

Affected products

• stephenharris Event Organiser: through 3.12.9

References

• https://plugins.trac.wordpress.org/changeset/3589132/event-organiser
• https://www.wordfence.com/threat-intel/vulnerabilities/id/3f417afd-2822-412f-b68a-f09c013d6049?source=cve

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