CVE-2026-77991CWE-434unrestricted-file-upload

CVE-2026-77991

published August 27, 2026

CVSS
9.4
EPSS
1%
Percentile
50.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
9.4 · NONE
CVSS v4.0
9.4 · 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
EPSS
0.00642 · 50.1th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-08-27T10:17Z
References (1)
https://www.joomlaeventmanager.net/ · [email protected]
EPSS history
Timeline
  • 28 AUG 06:53Z
    EPSS moved — → 0%
    epss
  • 27 AUG 05:50Z
    Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager < 5.0.1
    cvelistv5