File Manager Pro <= 8.3.4 - Authenticated (Subscriber+) Arbitrary File Upload

published 2024-02-05 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-59050

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 15.9%; EPSS 15.9% chance of exploitation in 30 days, percentile 96%
public exploits: 0; none known

The File Manager Pro plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 8.3.4 via the mk_check_filemanager_php_syntax AJAX function. This makes it possible for authenticated attackers, with subscriber access and above, to execute code on the server. Version 8.3.5 introduces a capability check that prevents users lower than admin from executing this function.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 y ago (2024-02-06)

Exploit prediction

15.87% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

gist.github.com https://gist.github.com/Kun19/046b2b305cac5f2edd38037984c2e8e3 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

File Manager File Manager Pro

Classification

Weakness

CWE-94 Improper Control of Generation of Code
CWE-434 Unrestricted Upload of File with Dangerous Type

Technology feeds

WordPress rss critical rss

References

gist.github.com /Kun19/046b2b305cac5f2edd38037984c2e8e3
exploit
wordfence.com /threat-intel/vulnerabilities/id/1e8e0257-a745-495f-a103-c032b95209fc?source=cve
third-party-advisory

Sources

CVE List CVE-2023-6846
NVD CVE-2023-6846

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary