CVE-2026-12843: LearnDash LMS 4.25.0 - 5.1.6 - Unauthenticated Arbitrary Course Enrollment via REST Endpoint

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-05 · updated 2026-09-08
Weakness: CWE-862

Description

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.

Affected products

StellarWP LearnDash LMS: from 4.25.0 through 5.1.6

References

https://docs.nexcess.com/software/changelogs/learndash/sfwd-lms/5-1-6-1/
https://www.wordfence.com/threat-intel/vulnerabilities/id/48d29e8d-4084-401e-82ff-e4750d739c7c?source=cve

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