High severity · published May 28, 2025
CVE-2025-4800
MasterStudy LMS Pro <= 4.7.0 - Authenticated (Subscriber+) Arbitrary File Upload
8.8
CVSS
1.2%
EPSS
No
On KEV
Description
The MasterStudy LMS Pro plugin for WordPress is vulnerable to arbitrary file uploads due to a missing file type validation in the stm_lms_add_assignment_attachment function in all versions up to, and including, 4.7.0. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload arbitrary files on the affected site's server, which may make remote code execution possible.
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)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ML
MasterStudy LMS Pro · StylemixThemes
through 4.7.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-4800
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-4800
docs.stylemixthemes.com
https://docs.stylemixthemes.com/masterstudy-lms/changelog-pro-version
stylemixthemes.com
https://stylemixthemes.com/wordpress-lms-plugin/
themeforest.net
https://themeforest.net/item/masterstudy-education-center-wordpress-theme/12170274/
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/c170a228-4abd-4ee6-ba37-bdcde1cb7fc5?source=cve
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