What is CVE-2026-12843?

CVE-2026-12843 is a medium-severity vulnerability in Stellarwp Learndash Lms, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-09-05.

How severe is CVE-2026-12843?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Stellarwp Learndash Lms

CVE-2026-12843

The LearnDash LMS plugin for WordPress is vulnerable to authorization bypass in versions 4.25.0 - 5.1.6. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to enroll arbitrary users in paid courses without payment verification, bypassing the entire payment system and gaining unauthorized access to premium educational content.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Stellarwp Learndash Lms

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-12843?: CVE-2026-12843 is a medium-severity vulnerability in Stellarwp Learndash Lms, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-09-05.
How severe is CVE-2026-12843?: Medium severity. CVSS v3 base score is 5.4 out of 10.