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CVE-2026-17541 – Unauthenticated Sensitive Information Disclosure – File Manager (Bit File Manager)

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Summary

CVE-2026-17541 is a missing-authorization / sensitive information disclosure vulnerability in the File Manager (Bit File Manager) plugin for WordPress in all versions before 6.9.1. A REST API endpoint lacks proper authorization, allowing unauthenticated attackers to read the plugin’s file activity log. It carries a CVSS v3.1 base score of 7.5 (High).

Technical details

  • Root cause: A REST API endpoint exposed by the plugin does not enforce authorization checks before returning data (CWE-200: Exposure of Sensitive Information to an Unauthorized Actor).
  • Trigger conditions: No authentication and no user interaction are required; an attacker simply requests the unprotected endpoint over the network.
  • Attack vector: Network (remote, unauthenticated HTTP request against the affected WordPress site).
  • Impact: Discloses the plugin’s file activity log, revealing file operations performed on the site, the file paths involved, and the name of the user who performed each operation. This is a confidentiality-only impact with no direct loss of integrity or availability.

Affected software

  • File Manager (Bit File Manager) WordPress plugin — all versions before 6.9.1.

Severity

  • CVSS v3.1 base score: 7.5 (High)
  • Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate: Upgrade the File Manager plugin to version 6.9.1 or later, which addresses the missing authorization on the affected endpoint.
  • If no patch can be applied immediately: Restrict access to the plugin’s REST API endpoint at the web server or WAF layer, or disable/remove the plugin until it can be updated.

References

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