MasterStudy LMS Pro <= 4.7.0 - Authenticated (Subscriber+) Arbitrary File Upload
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| StylemixThemes | MasterStudy LMS Pro | up to 4.7.0 | — | No fix listed | CNA |
- MasterStudy LMS Pro VendorStylemixThemes Affected up to 4.7.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-4800
- 2026-10-03 Alias added: GHSA-6mvv-hjmg-x9rf
References
Other 4
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c170a228-4abd-4ee6-ba37-bdcde1cb7fc5?source=cve
- https://stylemixthemes.com/wordpress-lms-plugin/
- https://themeforest.net/item/masterstudy-education-center-wordpress-theme/12170274/
- https://docs.stylemixthemes.com/masterstudy-lms/changelog-pro-version
More StylemixThemes vulnerabilities
- TI-2024-01413 MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.2.5 - Unauthenticated SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2022-00364 MasterStudy LMS < 2.7.6 - Unauthenticated Admin Account Creation CVSS 3.1CRITICAL 9.8
- TI-2024-24620 WordPress Consulting Elementor Widgets plugin <= 1.3.0 - Remote Code Execution (RCE) vulnerability CVSS 3.1CRITICAL 9.9
- TI-2023-02655 BookIt <= 2.3.7 - Authentication Bypass CVSS 3.1CRITICAL 9.8
- TI-2024-05535 MasterStudy LMS < 3.3.24 - Privilege Escalation to Instructor CVSS 3.1CRITICAL 9.1
- TI-2024-24618 WordPress Consulting Elementor Widgets plugin <= 1.3.0 - Unauthenticated Local File Inclusion vulnerability CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-4800 · CVE Program
- CVE-2025-4800 · NVD
- FIRST EPSS
- GHSA-6mvv-hjmg-x9rf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences