CVE-2021-24455: Tutor LMS < 1.9.2 - Authenticated Stored Cross-Site Scripting (XSS)

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-08-02 · updated 2026-06-17
Weakness: CWE-79

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.

Affected products

themeum Tutor LMS – eLearning and online course solution: before 1.9.2 — fixed in 1.9.2

How to fix

Upgrade to a fixed version: themeum Tutor LMS – eLearning and online course solution 1.9.2. Check the vendor advisory for mitigations.

References

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