CVE-2026-77991criticalCWE-434

CVE-2026-77991: critical vulnerability in joomlaeventmanager.net JEM - Joomla Event…

Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager < 5.0.1

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48Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.4epss 0.6%
from disclosure to weapon22 days
Published on NVDAug 27
1st PoC+22d
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
joomlaeventmanager.net · JEM - Joomla Event Manager extension for Joomla
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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