LearnPress <= 4.2.5.3 - Reflected Cross-Site Scripting via add_internal_scripts_to_head

6.1
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2023-5558
CVSS 6.1 (Medium)
Publicly Published November 7, 2023
Last Updated February 6, 2024
Researcher Vitor Pacheco

Description

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the add_internal_scripts_to_head function in all versions up to and including 4.2.5.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

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

References

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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 4.2.5.4, or a newer patched version
Affected Version
  • < 4.2.5.4
Patched Version
  • 4.2.5.4

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, 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 <= 4.3.6 - Unauthenticated Sensitive Information Exposure via 'c_status' and 'return_type' Parameters CVE-2026-8502 5.3 Jamshed Yergashvoyev (CVE Guy) June 5, 2026
5 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
6 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
7 LearnPress <= 4.3.2.8 - Missing Authorization to Unauthenticated Arbitrary Quiz Answer Deletion CVE-2026-4365 9.1 Supakiad S. (m3ez) April 13, 2026
8 LearnPress <= 4.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'skin' Shortcode Attribute CVE-2026-4333 6.4 zaim April 7, 2026
9 LearnPress <= 4.3.2.8 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Quiz Answer Deletion CVE-2026-3225 4.3 Jack Pas (Dark.) March 23, 2026
10 LearnPress <= 4.3.2.8 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Email Notification Triggering CVE-2026-3226 4.3 Jack Pas (Dark.) March 11, 2026

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