Masteriyo LMS – LMS Course Builder, Quizzes & Certificates 1.14.0 — 3.4.0 - Authenticated (Custom Role+) Insecure Direct Object Reference
CVE-2026-82851Published · Updated Action summary
Affected: 1.14.0 – 3.4.0Update to 3.4.1 or newer
All remediation steps- Severity
- Medium4.3
- CVSS
- 4.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Required access
- Unknown
- Exploit prediction (EPSS)
- 0.3% chance in 30 days22th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Masteriyo LMS – LMS Course Builder, Quizzes & Certificates learning-management-system
- Affected1.14.0 – 3.4.0
- Patched in3.4.1
Update to 3.4.1 or newer.
You are affected if you run 1.14.0 – 3.4.0. Version 3.4.1 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Masteriyo LMS – LMS Course Builder, Quizzes & Certificates.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 3.4.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Masteriyo LMS – LMS Course Builder, Quizzes & Certificates to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Karthik Ramakrishnan.
The Masteriyo LMS – LMS Course Builder, Quizzes & Certificates plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions 1.14.0 through 3.4.0. This is due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with custom role-level access and above, to perform an unauthorized action.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Masteriyo LMS – LMS Course Builder, Quizzes & Certificates
All 33| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Unauthenticated Arbitrary Content Deletion ≤3.4.3Update to 3.5.0 | CVE-2026-116410 | |
| Medium4.3 | Authenticated (Subscriber+) Information Exposure ≤3.4.1Update to 3.4.2 | CVE-2026-82850 | |
| Medium4.3 | Authenticated (Subscriber+) Insecure Direct Object Reference ≤3.4.1Update to 3.4.2 | CVE-2026-82849 | |
| Medium6.4 | Authenticated (Custom Role+) Stored Cross-Site Scripting <3.4.1Update to 3.4.1 | CVE-2026-82847 | |
| High8.1 | Unauthenticated PHP Object Injection ≤3.4.0Update to 3.4.1 | CVE-2026-62107 |
- Medium5.3Unauthenticated Arbitrary Content Deletion
≤3.4.3Update to 3.5.0
- Medium4.3Authenticated (Subscriber+) Information Exposure
≤3.4.1Update to 3.4.2
- Medium4.3Authenticated (Subscriber+) Insecure Direct Object Reference
≤3.4.1Update to 3.4.2
- Medium6.4Authenticated (Custom Role+) Stored Cross-Site Scripting
<3.4.1Update to 3.4.1
- High8.1Unauthenticated PHP Object Injection
≤3.4.0Update to 3.4.1
Timeline
CVE published
Severity medium, CVSS 4.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.