CVE-2026-78078CWE-434unrestricted-file-upload

CVE-2026-78078

published August 31, 2026

CVSS
8.9
EPSS
0%
Percentile
36.7
In the wild
Unconfirmed
What it is

Joomla Extension - joomshaper.com - Privileged File Upload Bypass via Content Spoofing in Helix Ultimate < 2.2.10 - Image uploads previously validated only file extension and basic size parameters. Non-image files disguised with raster extensions could be uploaded. Added strict MIME verification and GD binary raster decoding (imagecreatefromstring) to reject invalid/malformed images fail-closed.

The record
Technical detail
CVSS
8.9 · NONE
CVSS v4.0
8.9 · CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS
0.00435 · 36.7th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-08-31T18:17Z
References (1)
https://www.joomshaper.com/joomla-templates/helixultimate · [email protected]
EPSS history
Timeline
  • 02 SEP 03:39Z
    EPSS moved — → 0%
    epss
  • 31 AUG 13:55Z
    Joomla Extension - joomshaper.com - Privileged File Upload Bypass via Content Spoofing in Helix Ultimate < 2.2.10
    cvelistv5