LearnPress – WordPress LMS Plugin for Create and Sell Online Courses: A security weakness

LearnPress – WordPress LMS Plugin for Create and Sell Online Courses is affected by a security weakness. Exploitation requires an authenticated subscriber account. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 4.3.5.

CVE / CNA score 4.3 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: LearnPress – WordPress LMS Plugin for Create and Sell Online Courses
Plugin slug: learnpress
Affected: <= 4.3.5
Safe version: See mitigation notes
Published: May 14, 2026
Weakness: CWE-639 — Authorization Bypass Through User-Controlled Key

This CVE was published May 14, 2026 and is one of 81 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update LearnPress – WordPress LMS Plugin for Create and Sell Online Courses when a release after 4.3.5 becomes available; until then, disable and remove it when the site's risk warrants. The official upstream changelog lists version 4.4.4, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The LearnPress – WordPress LMS Plugin for Create and Sell Online Courses plugin for WordPress is vulnerable to payment bypass through user-controlled key in all versions up to, and including, 4.3.5. This is due to improper handling of user-supplied request parameters in the REST API endpoint, which passes the unsanitized parameter array to the add_to_cart() function where array_merge() allows attacker-controlled values to overwrite hardcoded defaults. This makes it possible for authenticated attackers, with subscriber-level access and above, to enroll in any paid course entirely free of charge by supplying a quantity value of zero, which causes the order total to calculate as $0 and bypasses all payment gateway requirements.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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