ThimPress LearnPress Plugin up to 4.3.3 on WordPress Shortcode sprintf cross site scripting

Summaryinfo

A vulnerability identified as problematic has been detected in ThimPress LearnPress Plugin up to 4.3.3 on WordPress. This affects the function sprintf of the component Shortcode Handler. Performing a manipulation results in cross site scripting. This vulnerability is identified as CVE-2026-4333. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in ThimPress LearnPress Plugin up to 4.3.3 on WordPress. It has been classified as problematic. This affects the function sprintf of the component Shortcode Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

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.

The weakness was released by Djaidja Moundjid. The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-4333 since 03/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 4.3.2.8 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• ThimPress

Name

• LearnPress Plugin

Version

• 4.3.0
• 4.3.1
• 4.3.2
• 4.3.3

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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