What is CVE-2021-24455?

CVE-2021-24455 is a medium-severity vulnerability in Themeum Tutor Lms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-08-02.

How severe is CVE-2021-24455?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2021-24455 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Themeum Tutor Lms

CVE-2021-24455

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.007 (51.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Themeum Tutor_lms
Unknown Tutor Lms – Elearning And Online Course Solution — versions 1.9.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

contact@wpscan.com (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-24455?: CVE-2021-24455 is a medium-severity vulnerability in Themeum Tutor Lms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-08-02.
How severe is CVE-2021-24455?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2021-24455 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.