CVE-2026-4484 identifies a critical privilege escalation vulnerability in the Masteriyo LMS plugin for WordPress, affecting all versions up to and including 2.1.6. This flaw allows authenticated attackers with Student-level access or higher to elevate their privileges to that of an administrator by exploiting a weakness in the user role update function. With a CVSS score of 9.8 (Critical), the vulnerability has a network attack vector and low complexity, posing a high risk to confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation (KEV) and no public exploit code available, though it has received minor community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Masteriyo | Masteriyo LMS – Online Course Builder For ELearning, LMS & Education | >= 0, <= 2.1.6CNA affecteddefault unaffected |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.