File Manager - Improper Access Control (CVE-2026-17540)
Description
The File Manager WordPress plugin before 6.9.1 does not properly authorise its file management commands, allowing any authenticated user, such as a subscriber, to read and delete arbitrary files under the WordPress installation directory, which could lead to the disclosure of the site's configuration secrets and to denial of service.
psychologyCrowdSec Analysis
CVE-2026-17540 is a high-severity access control vulnerability in the File Manager WordPress plugin before version 6.9.1. Any authenticated user, including a subscriber, may be able to read or delete arbitrary files in the WordPress installation directory, exposing configuration secrets or causing denial of service.
CrowdSec has been tracking this vulnerability and its exploits since 26th of October 2026.
CrowdSec has not observed any significant exploitation activity targeting CVE-2026-17540 across its network. As a result, no community-driven trend analysis is available for this vulnerability at this time.
Attackers authenticate to WordPress, retrieve a REST nonce from /wp-admin/admin-ajax.php?action=rest-nonce, then target /wp-admin/admin-ajax.php?action=bitapps_fm_connector with cmd=file and a crafted target parameter to read files such as wp-config.php.
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| Event | Date |
|---|---|
| CVE Published | 2026-08-10 |
| Rule Released | 2026-10-26 |