WordPress security changelog
MEDIUM CVE-2021-24455 Modified

Tutor LMS – eLearning and online course solution: Cross-site scripting

Tutor LMS – eLearning and online course solution is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.

CVE / CNA score 5.4 CVSS · contact@wpscan.com
NVD score 5.4 CVSS 3.1 · nvd@nist.gov
Component
Tutor LMS – eLearning and online course solution
Plugin slug
tutor-lms
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Aug 02, 2021
Weakness
CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Aug 02, 2021 and is one of 32 known issues for this plugin.

Update, patch or deactivate.

Update Tutor LMS – eLearning and online course solution to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

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 – eLearning and online course solution WordPress plugin before 1.9.2 did not escape the Summary field of Announcements (when outputting it in an attribute), which can be created by users as low as Tutor Instructor. This lead to a Stored Cross-Site Scripting issue, which is triggered when viewing the Announcements list, and could result in privilege escalation when viewed by an admin.

NVD vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary and upstream sources