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CVE-2026-73697 – Arbitrary File Write / OS Command Injection – Control Web Panel (CWP) before 1.16

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Summary

CVE-2026-73697 is an arbitrary file write and OS command injection vulnerability in the phpini_editor user panel module of Control Web Panel (CWP). An attacker with access to the module can write attacker-controlled content to arbitrary paths and execute arbitrary OS commands. The CVSS v4.0 score is 8.7 (High).

Technical details

  • Root cause: the phpini_editor user panel module in CWP allows attacker-controlled content to be written to arbitrary paths and allows OS command execution. The CVE record classifies this as CWE-78 (OS Command Injection) and CWE-22 (Path Traversal).
  • Trigger conditions: the attacker needs access to the phpini_editor module. The CVSS vector requires low privileges (PR:L) and no user interaction.
  • Attack vector: network.
  • Impact: arbitrary file write and arbitrary OS command execution. The vector rates confidentiality, integrity and availability impact as high.

Affected software

  • Control Web Panel (CWP) webpanel_version earlier than 1.16

Severity

  • CVSS v4.0: 8.7 (High), CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  • The CVE record also lists a CVSS v3.1 score of 8.8, CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The 8.7 score above comes from the v4.0 vector.

Mitigation and recommended actions

  • Immediate: upgrade Control Web Panel to webpanel_version 1.16 or later.
  • If you cannot patch right away, I found no vendor-documented workaround. As general hardening, restrict network access to the CWP user panel to trusted addresses and review which accounts can reach the phpini_editor module.

References

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