LearnPress <= 4.1.3.1 - Stored Cross-Site Scripting via $custom_profile

5.5
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2021-39348
CVSS 5.5 (Medium)
Publicly Published October 18, 2021
Last Updated February 3, 2023
Researcher Thinkland Security Team

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.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

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Vulnerability Details for LearnPress – WordPress LMS Plugin for Create and Sell Online Courses

Software Type Plugin
Software Slug learnpress (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.1.3.2, or a newer patched version
Affected Version
  • <= 4.1.3.1
Patched Version
  • 4.1.3.2

Recent vulnerabilities in LearnPress – WordPress LMS Plugin for Create and Sell Online Courses

# Title CVE ID CVSS Researchers Date
1 LearnPress <= 4.4.1 - Missing Authorization to Unauthenticated Sensitive Information Exposure via /lp/v1/users/check-answer and /start-quiz REST Endpoints CVE-2026-13765 7.5 이성민 July 16, 2026
2 LearnPress <= 4.4.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'class_wrapper_form' Shortcode Attribute CVE-2026-12732 6.4 zaim, Wordfence PRISM June 30, 2026
3 LearnPress <= 4.3.9.1 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Information Disclosure via 'userId' Parameter CVE-2026-11988 6.5 javitoia June 30, 2026
4 LearnPress <= 4.4.0 - Reflected Cross-Site Scripting CVE-2026-12970 6.1 Meher Sudhakar Abbireddi June 29, 2026
5 LearnPress <= 4.3.6 - Unauthenticated Sensitive Information Exposure via 'c_status' and 'return_type' Parameters CVE-2026-8502 5.3 Jamshed Yergashvoyev (CVE Guy) June 5, 2026
6 LearnPress – WordPress LMS Plugin for Create and Sell Online Courses <= 4.3.6 - Reflected Cross-Site Scripting CVE-2026-48865 6.1 VanTastic June 1, 2026
7 LearnPress – WordPress LMS Plugin for Create and Sell Online Courses <= 4.3.5 - Authenticated (Subscriber+) Payment Bypass to Free Course Enrollment via 'quantity' Parameter CVE-2026-7648 4.3 winrace May 13, 2026
8 LearnPress <= 4.3.2.8 - Missing Authorization to Unauthenticated Arbitrary Quiz Answer Deletion CVE-2026-4365 9.1 Supakiad S. (m3ez) April 13, 2026
9 LearnPress <= 4.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'skin' Shortcode Attribute CVE-2026-4333 6.4 zaim April 7, 2026
10 LearnPress <= 4.3.2.8 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Quiz Answer Deletion CVE-2026-3225 4.3 AlexHenry March 23, 2026

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