8.8

CVE-2025-4800: stylemixthemes masterstudy lms pro

CVSS: 8.8v3.1HighDeferred
Published 28-05-2025Last modified 08-04-2026
Open JSON

Vulnerability summary

CVE-2025-4800 is a high (CVSS 8.8) vulnerability in stylemixthemes masterstudy lms pro. EPSS estimates a 1.15% chance of exploitation in the next 30 days, higher than 66.3% of scored vulnerabilities. Fixed in 4.7.1.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
1.15%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 28-05-2025
    PublishedVulnerability first disclosed.
  2. 08-04-2026
    Last modifiedVulnerability information updated.

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

1.15%

Chance of exploitation in the next 30 days

Percentile

66%

Versus all other CVEs

30-day change

+0.03 pp

From 1.12% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.15%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Stylemixthemes1 product
Wordpress1 product
  • masterstudy-lms-learning-management-system-pro≤ 4.7.0 (fixed in 4.7.1)

2 vendors · 2 products

References

5 links