Tutor LMS template rendering permits unauthenticated PHP function execution
Tutor LMS 2.1.3 through 4.0.5 allows request data to overwrite internal variables while the plugin renders templates. An unauthenticated attacker can use that overwrite to invoke arbitrary zero-argument PHP functions and receive their output.
- Component
- Tutor LMS
- Plugin slug
tutor-lms- Affected
- 2.1.3 to < 4.0.6
- Safe version
4.0.6- Published
- Aug 27, 2026
This CVE was published Aug 27, 2026 and is one of 37 known issues for this plugin.
Update, patch or deactivate.
Update Tutor LMS to 4.0.6 or later immediately and review application and access logs for unexpected unauthenticated requests involving Tutor LMS template rendering.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Tutor LMS WordPress plugin before 4.0.6 does not prevent request data from overwriting internal variables while rendering templates, allowing unauthenticated users to invoke arbitrary zero-argument PHP functions and receive their output.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H