High severity · published Aug 6, 2026
CVE-2026-15991
File Manager 6.0 - 6.9 - Missing Authorization to Authenticated (Subscriber+) Arbitrary File Read and Deletion via 'cmd' Query Parameter
8.8
CVSS
1.1%
EPSS
No
On KEV
Description
The File Manager plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the connector function in all versions from 6.0 - 6.9. This makes it possible for authenticated attackers, with subscriber-level access and above, to read and delete arbitrary files on the server, which can lead to remote code execution when the right file is deleted (such as wp-config.php). The bypass is triggered by passing cmd=rm or cmf=file in the URL query string of a POST request: elFinder's bind registration reads the command exclusively from $_POST and therefore never registers the rm.pre permission handler, while the dispatcher reads from the merged $_GET+$_POST superglobal and executes the rm or file command unchecked against a volume that defaults to ABSPATH.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FM
File Manager · bitpressadmin
6.0 through 6.9 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15991
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15991
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/file-manager/tags/6.9/backend/app/Http/Controllers/FileManagerController.php#L32
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/file-manager/tags/6.9/backend/app/Http/Controllers/FileManagerController.php#L34
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/file-manager/tags/6.9/backend/app/Providers/AccessControlProvider.php#L121
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/file-manager/tags/6.9/backend/hooks/ajax.php#L10
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/file-manager/tags/6.9/vendor/studio-42/elfinder/php/elFinder.class.php#L802
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/file-manager/tags/6.9/vendor/studio-42/elfinder/php/elFinderConnector.class.php#L320
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