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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| joomlaeventmanager.net | JEM - Joomla Event Manager extension for Joomla | 1.0.0-5.0.0 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
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abraxas/CVE-2026-77991 ★ 1 · Sep 18, 2026
CVE-2026-77991 - joomlaeventmanager.net - Critical - Privileged POST /administrator/index.php - Remote Code Execution
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.