The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'skin' attribute of the learn_press_courses shortcode in all versions up to and including 4.3.3. This is due to insufficient input sanitization and output escaping on the 'skin' shortcode attribute. The attribute value is used directly in an sprintf() call that generates HTML (class attribute and data-layout attribute) without any esc_attr() escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVE-2026-4333 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin LearnPress – WordPress LMS Plugin for Create and Sell Online Courses. It affects Versions up to 4.3.3 and is fixed in 4.3.4.
Use the related hub and response guides to connect this CVE-2026-4333 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2026-4333 is tracked for the Plugin LearnPress – WordPress LMS Plugin for Create and Sell Online Courses as medium severity with CVSS 6.4. The affected range is Versions up to 4.3.3. Update LearnPress – WordPress LMS Plugin for Create and Sell Online Courses to 4.3.4 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Plugin package and compare its version with Versions up to 4.3.3.
Confirm LearnPress – WordPress LMS Plugin for Create and Sell Online Courses is updated to 4.3.4 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Plugin |
|---|---|
| Software Slug |
learnpress
View on wordpress.org
|
| CVE | CVE-2026-4333 |
| Patched Versions |
4.3.4
|
| Affected Versions |
Versions up to 4.3.3
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
LearnPress – WordPress LMS Plugin <= 4.2.7 - Unauthenticated SQL Injection via 'c_only_fields'
LearnPress – WordPress LMS Plugin <= 4.2.7 - Unauthenticated SQL Injection via 'c_fields'
LearnPress – WordPress LMS Plugin <= 4.2.6.5 - Unauthenticated Time-Based SQL Injection
LearnPress <= 4.2.5.7 - Unauthenticated SQL Injection via order_by
LearnPress <= 4.1.7.3.2 - Unauthenticated SQL Injection
LearnPress <= 4.1.7.3.2 - Unauthenticated Local File Inclusion
LearnPress <= 4.1.7.1 - Unauthenticated PHP Object Injection
LearnPress <= 4.1.3 - Authenticated SQL Injection
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