Tutor LMS <= 4.0.5 — Unauthenticated Remote Code Execution via 'template' and 'data' POST Parameters
CVE-2026-16759Published · Updated Action summary
Affected: ≤4.0.5Update to 4.0.6 or newer
All remediation steps- Severity
- Medium6.5
- CVSS
- 6.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Tutor LMS – eLearning and online course solution tutor
- Affected≤ 4.0.5
- Patched in4.0.6
Update to 4.0.6 or newer.
You are affected if you run ≤ 4.0.5. Version 4.0.6 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Tutor LMS – eLearning and online course solution.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 4.0.6, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Tutor LMS – eLearning and online course solution to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Slopothecary.
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Remote Code Execution limited to zero-argument function invocation in all versions up to, and including, 4.0.5 via the tutor_course_filter_ajax AJAX action. This is due to missing authorization on the handler combined with unsanitized array keys being passed to extract() inside tutor_load_template(), allowing attacker-controlled POST data to overwrite the local $template variable and, in the resulting templates/single-content-loader.php template, the $method_map and $context variables invoked at $method_map[$context](). This makes it possible for unauthenticated attackers to call an arbitrary zero-argument PHP function server-side and, via WordPress core edit_user(), to create a persistent subscriber-level account from request parameters.
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 Tutor LMS – eLearning and online course solution
All 102| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.5 | Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Exposure via REST API Endpoints ≤4.1.2Update to 4.1.3 | CVE-2026-93779 | |
| Medium4.3 | 4.1.3 - Authenticated (Subscriber+) Information Exposure 1.6.4 – 4.1.3Update to 4.2.0 | CVE-2026-85570 | |
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting ≤4.1.2Update to 4.1.3 | CVE-2026-111407 | |
| Medium4.3 | Insecure Direct Object Reference to Authenticated (Author+) Arbitrary Course Modification and Ownership Takeover via 'ID' Parameter ≤4.1.0Update to 4.1.1 | CVE-2026-92715 | |
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting via display_name Parameter ≤4.1.0Update to 4.1.1 | CVE-2026-93681 |
- Medium6.5Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Exposure via REST API Endpoints
≤4.1.2Update to 4.1.3
- Medium4.34.1.3 - Authenticated (Subscriber+) Information Exposure
1.6.4 – 4.1.3Update to 4.2.0
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
≤4.1.2Update to 4.1.3
- Medium4.3Insecure Direct Object Reference to Authenticated (Author+) Arbitrary Course Modification and Ownership Takeover via 'ID' Parameter
≤4.1.0Update to 4.1.1
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting via display_name Parameter
≤4.1.0Update to 4.1.1
Timeline
CVE published
Severity medium, CVSS 6.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. 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.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.