CVE-2026-10522: CWE-269 Improper Privilege Management in MemberHero
Description
The MemberHero WordPress plugin through 6.9 does not restrict which account fields can be supplied during its frontend registration process, allowing unauthenticated attackers to register a new user with an arbitrary role, including Administrator, leading to a full site takeover. Version 6.9 is advertised as resolving this issue, but the fix is incomplete and the current version remains exploitable by unauthenticated attackers to obtain administrator access and to take over existing accounts. No version that fully addresses the issue is available at the time of this advisory. Mitigation: deactivate and remove the MemberHero WordPress plugin through 6.9 until a version that fully resolves this issue is released. If the MemberHero WordPress plugin through 6.9 must stay active, disable public registration, restrict access to the registration functionality, and monitor the site for unexpected administrator accounts.
CVSS v3.1
Score 9.8critical
Affected software
MemberHero
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-10522 is a critical vulnerability in the MemberHero WordPress plugin (through version 6.9) caused by improper privilege management (CWE-269). The plugin does not restrict which account fields can be submitted during frontend registration, allowing unauthenticated attackers to create accounts with arbitrary roles, including Administrator. This leads to full site takeover. Although version 6.9 advertises a fix, it is incomplete and the plugin remains vulnerable. No version fully resolving the issue is currently available.
Potential Impact
An unauthenticated attacker can register an account with administrator privileges, resulting in complete compromise of the affected WordPress site. This includes the ability to take over existing accounts and perform any administrative actions, severely impacting confidentiality, integrity, and availability.
Mitigation Recommendations
No official fix is currently available. The vendor recommends deactivating and removing the MemberHero plugin through version 6.9 until a fully resolved version is released. If the plugin must remain active, disable public registration, restrict access to registration functionality, and monitor for unexpected administrator accounts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-06-01T08:55:33.674Z
- State
- PUBLISHED
Threat ID: 6a927ab3acd9273b496bde60
Added to database: 08/29/2026, 06:22:43 UTC
Last enriched: 09/07/2026, 13:03:15 UTC
Last updated: 10/13/2026, 18:48:17 UTC
Views: 78
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