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Vulnerability record · CVE-2021-39348 · published 21 October 2021

CVE-2021-39348: Thimpress learnpress cross-site scripting vulnerability

Thimpress · Learnpress

The LearnPress WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $custom_profile parameter found in the ~/inc/admin/views/backend-user-profile.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 4.1.3.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled. Please note that this is seperate from CVE-2021-24702.

4.8 CVSS 3.1 Medium EPSS 5.2% · top 7.8% CWE-80 · CWE-80CWE-79 · Cross-site scripting
4.8CVSS 3.1 base score, v2 3.5
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The LearnPress WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $custom_profile parameter found in the ~/inc/admin/views/backend-user-profile.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 4.1.3.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled. Please note that this is seperate from CVE-2021-24702.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/BigTiger2020/word-press/blob/main/LearnPress.md ExploitThird Party Advisory
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2614592%40learnpress&new=2614592%40lear PatchThird Party Advisory
https://wordfence.com/vulnerability-advisories/#CVE-2021-39348 Third Party Advisory
https://github.com/BigTiger2020/word-press/blob/main/LearnPress.md ExploitThird Party Advisory
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2614592%40learnpress&new=2614592%40lear PatchThird Party Advisory
https://wordfence.com/vulnerability-advisories/#CVE-2021-39348 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-36515Thimpress learnpress missing authorization vulnerabilityMissing Authorization vulnerability in ThimPress LearnPress.This issue affects LearnPress: from n/a through 4.2.3.EPSS 0.44%9.8CVE-2024-4434Thimpress learnpress sql injection vulnerabilityThe LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to time-based SQL Injection via the ‘term_id’ parameter in versions up to, a…EPSS 37%9.8CVE-2023-6634Thimpress learnpress argument injection vulnerabilityThe LearnPress plugin for WordPress is vulnerable to Command Injection in all versions up to, and including, 4.2.5.7 via the get_content function. Th…EPSS 8.5%9.8CVE-2022-47615Thimpress learnpress unrestricted file upload vulnerabilityLocal File Inclusion vulnerability in LearnPress – WordPress LMS Plugin <= 4.1.7.3.2 versions.EPSS 5.1%9.8CVE-2022-45808Thimpress learnpress sql injection vulnerabilitySQL Injection vulnerability in LearnPress – WordPress LMS Plugin <= 4.1.7.3.2 versions.EPSS 4.3%9.8CVE-2021-24951Thimpress learnpress sql injection vulnerabilityThe LearnPress WordPress plugin before 4.1.4 does not sanitise, validate and escape the id parameter before using it in SQL statements when duplicati…EPSS 1.6%8.8CVE-2024-39641Thimpress learnpress cross-site request forgery vulnerabilityCross-Site Request Forgery (CSRF) vulnerability in ThimPress LearnPress.This issue affects LearnPress: from n/a through 4.2.6.8.2.EPSS 0.20%8.8CVE-2024-6589Thimpress learnpress php remote file inclusion vulnerabilityThe LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 4.2.6.8.2 via …EPSS 0.81%

Source: NIST National Vulnerability Database (record CVE-2021-39348), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.