CVE-2026-16310: CWE-639 Authorization Bypass Through User-Controlled Key in LearnDash MemberDash
Description
The MemberDash plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.8.5 via the 'id' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to change the password of any WordPress user, including administrators, by supplying an arbitrary user ID during registration, and take over their account without any notification sent to the victim.
CVSS v3.1
Score 9.8critical
Affected software
LearnDash
MemberDash
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16310 is an insecure direct object reference vulnerability in the MemberDash WordPress plugin. The vulnerability arises from missing validation on a user-controlled 'id' parameter, allowing unauthenticated attackers to supply arbitrary user IDs during registration and reset passwords of any user, including administrators. This results in complete account takeover without notification to the affected users. The vulnerability affects all versions up to and including 1.8.5. No patch or official remediation has been confirmed as of the published date.
Potential Impact
An attacker can fully compromise any WordPress user account, including administrators, by resetting their password without authentication or notification. This leads to complete loss of confidentiality, integrity, and availability of the affected WordPress site. The vulnerability is remotely exploitable without user interaction, making it highly critical.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the registration functionality or disable the MemberDash plugin if possible. Monitor for updates from LearnDash regarding patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-07-20T14:45:14.917Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9cd57cacd9273b491a6658
Added to database: 09/06/2026, 02:52:44 UTC
Last enriched: 09/07/2026, 09:22:37 UTC
Last updated: 10/19/2026, 06:48:15 UTC
Views: 97
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.