CVE-2025-4800

MasterStudy LMS Pro <= 4.7.0 - Authenticated (Subscriber+) Arbitrary File Upload

HIGH
8.8
CVSS Score
Published: May 28, 2025 at 05:24 AM UTC
Updated: June 17, 2026 at 09:34 AM UTC
1 product affected across 1 vendorMasterStudy LMS Pro

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Severity
HIGH8.8
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 4.7.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHWordfence
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-434

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