CVE-2020-9439

Name: CVE-2020-9439
Creator: NVD / NIST
Published: 2020-12-23T16:15:13.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.77%

Last modified Jun 17, 2026

CVE-2020-9439 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Multiple cross-site scripting (XSS) vulnerabilities in Uncanny Owl Tin Canny LearnDash Reporting before 3.4.4 allows authenticated remote attackers to inject arbitrary web script or HTML via the search_key GET Parameter in TinCan_Content_List_Table.php, message GET Parameter in licensing.php, tc_filter_group parameter in reporting-admin-menu.php, tc_filter_user parameter in reporting-admin-menu.php, tc_filter_course parameter in reporting-admin-menu.php, tc_filter_lesson parameter in reporting-admin-menu.php, tc_filter_module parameter in reporting-admin-menu.php, tc_filter_action parameter in reporting-admin-menu.php, tc_filter_data_range parameter in reporting-admin-menu.php, or tc_filter_data_range_last parameter in reporting-admin-menu.php.. EPSS estimates a 0.77% chance of exploitation in the next 30 days.

Description

Multiple cross-site scripting (XSS) vulnerabilities in Uncanny Owl Tin Canny LearnDash Reporting before 3.4.4 allows authenticated remote attackers to inject arbitrary web script or HTML via the search_key GET Parameter in TinCan_Content_List_Table.php, message GET Parameter in licensing.php, tc_filter_group parameter in reporting-admin-menu.php, tc_filter_user parameter in reporting-admin-menu.php, tc_filter_course parameter in reporting-admin-menu.php, tc_filter_lesson parameter in reporting-admin-menu.php, tc_filter_module parameter in reporting-admin-menu.php, tc_filter_action parameter in reporting-admin-menu.php, tc_filter_data_range parameter in reporting-admin-menu.php, or tc_filter_data_range_last parameter in reporting-admin-menu.php.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.77%

51.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Uncannyowl	Tin Canny Reporting For Learndash	< 3.4.4

References

https://gist.github.com/michiiii/9501b878e7ba3c9fc2a7407ff8277fa5Third Party Advisory
https://www.uncannyowl.com/knowledge-base/tin-canny-learndash-reporting-changelog/Release Notes, Vendor Advisory
https://gist.github.com/michiiii/9501b878e7ba3c9fc2a7407ff8277fa5Third Party Advisory
https://www.uncannyowl.com/knowledge-base/tin-canny-learndash-reporting-changelog/Release Notes, Vendor Advisory

Timeline

Published: Dec 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9439?

How severe is CVE-2020-9439?

CVE-2020-9439 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.77% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9439?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-9439?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST