CVE-2021-24873: Tutor LMS < 1.9.11 - Reflected Cross-Site Scripting

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-23 · updated 2026-06-17
Weakness: CWE-79

Description

The Tutor LMS WordPress plugin before 1.9.11 does not sanitise and escape user input before outputting back in attributes in the Student Registration page, leading to a Reflected Cross-Site Scripting issue

Affected products

themeum Tutor LMS – eLearning and online course solution: before 1.9.11 — fixed in 1.9.11

How to fix

Upgrade to a fixed version: themeum Tutor LMS – eLearning and online course solution 1.9.11. Check the vendor advisory for mitigations.

References

https://plugins.trac.wordpress.org/changeset/2615802/tutor
https://wpscan.com/vulnerability/19980b57-1954-4a29-b2c2-43eadf758ed3
https://plugins.trac.wordpress.org/changeset/2615802/tutor
https://wpscan.com/vulnerability/19980b57-1954-4a29-b2c2-43eadf758ed3

Get alerted when CVE-2021-24873 or the next vulnerability affects your stack