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CVE-2026-92805 – Unauthenticated Takeover via Installation Wizard – UVdesk Community Skeleton ≤ 1.1.

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Summary

CVE-2026-92805 is a missing authentication vulnerability (CWE-306) affecting UVdesk Community Skeleton, an open-source PHP/Symfony helpdesk ticketing platform, in all versions through 1.1.8. The installation wizard’s ConfigureHelpdesk controller exposes endpoints without any authentication check, allowing an unauthenticated network attacker to reconfigure the application’s database connection and create a new super administrator account. The flaw carries a CVSS v3.1 base score of 9.8 (Critical), reflecting full compromise of confidentiality, integrity, and availability with no privileges or user interaction required.

Technical details

  • Root cause: Routes belonging to the ConfigureHelpdesk controller (the installation wizard) lack authentication attributes/guards, so wizard endpoints remain reachable even after initial setup has completed.
  • Trigger conditions: An attacker sends direct HTTP requests to the exposed installation wizard endpoints on a running instance; no valid credentials, session, or user interaction are needed.
  • Attack vector: Network-based (AV:N), low attack complexity, no privileges required, no user interaction — exploitable remotely over the web application’s exposed HTTP interface.
  • Impact: Attackers can redirect/overwrite the application’s database configuration and provision a new super administrator account, resulting in complete takeover of the affected UVdesk instance, including access to all helpdesk tickets, customer data, and administrative functions.

Affected software

  • UVdesk Community Skeleton (uvdesk/community-skeleton, Composer package) — all versions from the initial release through 1.1.8 (inclusive).

Severity

  • CVSS v3.1 Base Score: 9.8 (Critical)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • (CVSS v4.0 score also published: 9.3 Critical — 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: At the time of publication, no vendor-confirmed patched release beyond 1.1.8 has been identified in official sources. Security teams should monitor the uvdesk/community-skeleton GitHub repository and Packagist for a fixed release and upgrade as soon as one is available.
  • If no patch is available:
    • Restrict network access to the installation wizard endpoints (e.g., /wizard/* routes) at the web server or firewall/WAF layer, allowing access only from trusted administrative IP ranges.
    • After completing initial installation, remove or disable the installation wizard controller/routes entirely from the deployed application, or block them via web server configuration (e.g., Nginx/Apache rules denying access to wizard paths).
    • Audit existing UVdesk instances for unexpected or unrecognized super administrator accounts and unauthorized database configuration changes.
    • Place internet-facing UVdesk deployments behind authentication at the network layer (VPN, IP allowlisting) until a vendor fix is confirmed and applied.

References

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