CVE-2026-78078
High
Description
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.
SeverityHigh
CVSS8.9
Exploit probability—
ProductHelix Ultimate extension for Joomla
PublishedAug 31, 2026
First seenAug 31, 2026
Weakness typeCWE-434Unrestricted upload of dangerous file type
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| joomshaper.com Helix Ultimate extension for Joomla | 1.0-2.2.9 | — |
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