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CVE-2026-74804 – Unauthenticated SQL Injection – Zoo extension for Joomla (1.0.0–4.1.63)

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Summary

CVE-2026-74804 is an unauthenticated SQL injection vulnerability in the Zoo (com_zoo) extension for Joomla, affecting ItemController::element(). The flaw allows unauthenticated attackers to manipulate SQL queries via request parameters, exposing restricted content and database contents. It carries a CRITICAL severity rating of 9.3.

Technical details

  • Root cause: the filter_type request parameter and the type_filter array are concatenated directly into the SQL WHERE condition string used by ItemController::element(), without quoting or escaping.
  • The unsanitized condition string is passed down and appended to the underlying database query verbatim.
  • Attack vector: network, reachable via a normal HTTP request to the item element endpoint — no authentication, form submission, or user interaction required.
  • Impact: attackers can bypass query filters to retrieve unpublished or login-restricted items, and can append UNION-based SQL to extract arbitrary database contents (e.g., database name, DBMS version), affecting confidentiality, integrity, and availability.

Affected software

  • Zoo extension for Joomla (com_zoo), versions 1.0.0 through 4.1.63 (includes the entire 3.x line).

Severity

  • CVSS v4.0 Base Score: 9.3 (Critical)
  • Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Mitigation and recommended actions

  • Immediate: upgrade the Zoo extension to version 4.1.65 or later, which addresses this issue along with two other unauthenticated vulnerabilities (an arbitrary file upload/RCE flaw and an open redirect) disclosed in the same release.
  • If unable to patch immediately, restrict or disable public access to the affected Zoo item-listing/filter endpoints at the web server or WAF layer until the update can be applied.
  • After patching, review the images/zoo/uploads/ directory and database for signs of prior exploitation or unauthorized file uploads.

References

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