High severity · published Jun 29, 2026
CVE-2026-49049
Joomla Extension - joomshaper.com - Unauthenticated access to Helix3 template ajax handler
7.5
CVSS
1%
EPSS
No
On KEV
Description
The Helix3 plugin for Joomla exposes an ajax handler task, that allows unauthenticated attackers to delete arbitrary files, write arbitrary JSON files and update template parameters.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HE
Helix3 extension for Joomla · joomshaper.com
1.0-3.1.1 · source: vendor
HE
Helix3 · Ollyo
1.0 through 3.1.1 · source: NVD