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CVE-2026-76606 – Path Traversal – Fabrik extension for Joomla 1.0.0 through <4.7.3

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Summary

CVE-2026-76606 is a path traversal vulnerability (CWE-22) in the Fabrik extension for Joomla, triggered through the extension’s image element. The flaw affects all Fabrik releases from 1.0.0 up to but not including 4.7.3 and carries a CVSS v4.0 base score of 10.0 (Critical), reflecting network exploitability with no authentication or user interaction required.

Technical details

  • Root cause: Improper limitation of a pathname to a restricted directory (CWE-22) in Fabrik’s image element handling.
  • Trigger conditions: Exploitable by supplying crafted input to the image element functionality, allowing traversal outside the intended directory scope.
  • Attack vector: Network-based, requiring no privileges and no user interaction (AV:N/AC:L/AT:N/PR:N/UI:N).
  • Impact: High impact to confidentiality, integrity, and availability of the underlying system (VC:H/VI:H/VA:H/SC:H/SI:H/SA:H per the published vector), consistent with unauthorized access to restricted directories/files on the host.

Affected software

  • Fabrik extension for Joomla (fabrikar.com), versions 1.0.0 through versions prior to 4.7.3.

Severity

  • CVSS v4.0 Base Score: 10.0 (Critical)
  • Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Mitigation and recommended actions

  • Immediate: Upgrade Fabrik to version 4.7.3 or later, which addresses this path traversal issue.
  • If immediate patching is not possible: Restrict or disable public access to the Fabrik image element functionality at the web server or WAF layer, and monitor for anomalous requests containing directory traversal sequences (e.g., ../) targeting Fabrik/com_fabrik endpoints until the update can be applied.

References

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