CVE-2026-12483: high-severity vulnerability in StellarWP LearnDash LMS
LearnDash LMS <= 5.1.5 - Authenticated (Subscriber+) Arbitrary File Upload via Assignment Upload Handler
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.6%
The LearnDash LMS plugin for WordPress is vulnerable to Unrestricted File Type Upload in versions up to and including 5.1.5. This is due to insufficient input validation in the 'learndash_fileupload_process' function, which iterates through an entire array and validates only the first file. This makes it possible for authenticated attackers, with subscriber-level access and above who are enrolled in a course with assignment uploads enabled, to upload arbitrary disallowed files, including PHP files, to the server's wp-content/uploads/learndash/assignments/ directory. The uploaded files can only be used for Remote Code Execution if default server configurations have been changed to allow for execution.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
StellarWP · LearnDash LMSRelated CVEs — StellarWP LearnDash LMS
In the same product, most dangerous first.
CVE-2024-1208MEDIUMLearnDash LMS <= 4.10.2 - Sensitive Information Exposure via APIEPSS 5.3%CVE-2024-1209MEDIUMLearnDash LMS <= 4.10.1 - Sensitive Information Exposure via assignmentsEPSS 2.4%CVE-2023-3105HIGHLearnDash LMS <= 4.6.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary User Password ChangeEPSS 2.2%CVE-2024-1210MEDIUMLearnDash LMS <= 4.10.1 - Sensitive Information Exposure via APIEPSS 2.0%CVE-2026-3079MEDIUMLearnDash LMS <= 5.0.3 - Authenticated (Contributor+) SQL Injection via 'filters[orderby_order]' ParameterEPSS 0.3%CVE-2026-12843MEDIUMLearnDash LMS 4.25.0 - 5.1.6 - Unauthenticated Arbitrary Course Enrollment via REST EndpointEPSS 0.3%