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LearnPress <= 4.3.3 — Authenticated (Contributor+) Stored Cross-Site Scripting via 'skin' Shortcode Attribute

CVE-2026-4333Published · Updated

Action summary

Affected: ≤4.3.3Update to 4.3.4 or newer

All remediation steps
Watch plugin
Severity
Medium6.4
CVSS
6.4
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-79 Cross-Site Scripting
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

LearnPress – WordPress LMS Plugin for Create and Sell Online Courses learnpress

  1. Affected≤ 4.3.3
  2. Patched in4.3.4

Update to 4.3.4 or newer.

You are affected if you run ≤ 4.3.3. Version 4.3.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under LearnPress – WordPress LMS Plugin for Create and Sell Online Courses.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 4.3.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch LearnPress – WordPress LMS Plugin for Create and Sell Online Courses to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to zaim.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

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

All 103
More vulnerabilities in LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
SeverityVulnerabilityCVEPublished
Medium4.3Missing Authorization
≤4.4.12Update to 4.4.13
CVE-2026-52713
Medium5.3Missing Authorization
≤4.4.11Update to 4.4.12
CVE-2026-115599
Medium5.3Missing Authorization
≤4.4.11Update to 4.4.12
CVE-2026-115598
Medium4.3Missing Authorization
≤4.4.11Update to 4.4.12
CVE-2026-115597
Medium4.3Missing Authorization
≤4.4.10Update to 4.4.11
CVE-2026-42690

Same weakness (Cross-Site Scripting)

All Cross-Site Scripting
Other Cross-Site Scripting vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity medium, CVSS 6.4

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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