CVE-2025-4800HIGH 8.8EPSS p56.8%

CVE-2025-4800CVE-2025-4800

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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS0.96% probability of exploitation · percentile 56.8% · 2026-06-19T12:03:05Z
Published2025-05-28
Last modified2026-04-15

Underlying weaknesses· 1

CWE-434

References

  1. https://docs.stylemixthemes.com/masterstudy-lms/changelog-pro-version
  2. https://stylemixthemes.com/wordpress-lms-plugin/
  3. https://themeforest.net/item/masterstudy-education-center-wordpress-theme/12170274/
  4. https://www.wordfence.com/threat-intel/vulnerabilities/id/c170a228-4abd-4ee6-ba37-bdcde1cb7fc5?source=cve

1

TypeTargetConfidenceTier
WeaknessUnrestricted Upload of File with Dangerous Typecwe-4340%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.