Joomla Extension - joomshaper.com - Unauthenticated access to Helix3 template ajax handler

published 2026-06-29 4mo ago modified 2026-10-25 17d ago also EUVD-2026-40122

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

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.

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CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 4mo ago (2026-06-29)

Exploit prediction

0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

joomshaper.com Helix3 extension for Joomla

Classification

Weakness

CWE-284 Improper Access Control

References

joomshaper.com /
product

Sources

CVE List CVE-2026-49049
NVD CVE-2026-49049

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.