What’s Vulnerable › Vulnerabilities

CVE-2026-77034: Joomla Extension - joomlaeventmanager.net - Unauthenticated article overwrite and force-publish in Joomla Event Manager < 5.0.1

• Severity: medium (CVSS 6.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-27 · updated 2026-08-28
• Weakness: CWE-284

Description

Joomla Extension - joomlaeventmanager.net - Unauthenticated article overwrite and force-publish in Joomla Event Manager < 5.0.1 - Any visitor holding their own session token can republish and overwrite an article associated with an event.

Affected products

• joomlaeventmanager.net JEM - Joomla Event Manager extension for Joomla: 1.0.0-5.0.0

References

• https://www.joomlaeventmanager.net/

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