What’s Vulnerable › Vulnerabilities

CVE-2026-77991: Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager < 5.0.1

• Severity: critical (CVSS 9.4 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% 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-434

Description

Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager < 5.0.1 - The administrator source model allows to write dangerous file type incl. PHP, leading to remote code execution.

Affected products

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

References

• https://www.joomlaeventmanager.net/

Get alerted when CVE-2026-77991 or the next vulnerability affects your stack