CVE-2026-16259: CWE-269 Improper Privilege Management in Uix UserCenter
Description
The Uix UserCenter WordPress plugin up to version 1.0.3 contains a critical improper privilege management vulnerability. It fails to verify that an unauthenticated profile-update request belongs to the requester and uses a hardcoded signing key for authentication tokens shared across all installations. This flaw allows unauthenticated attackers to forge tokens for any user, enabling them to overwrite administrator email and password details and take over accounts.
CVSS v3.1
Score 9.8critical
Affected software
Uix UserCenter
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-16259 describes an improper privilege management vulnerability (CWE-269) in the Uix UserCenter WordPress plugin through version 1.0.3. The plugin does not verify ownership of accounts during unauthenticated profile-update actions and authenticates these actions using a token signed with a hardcoded key identical across all installs. This allows attackers without authentication to forge tokens for arbitrary users, including administrators, and modify critical account credentials, resulting in full account takeover.
Potential Impact
An unauthenticated attacker can gain administrative control over any user account, including administrators, by forging authentication tokens and modifying account credentials. This leads to complete compromise of affected WordPress sites using the vulnerable plugin versions, with full confidentiality, integrity, and availability impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid using the vulnerable versions of the Uix UserCenter plugin or disable it to prevent exploitation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-07-20T08:29:53.101Z
- State
- PUBLISHED
Threat ID: 6a927ab3acd9273b496bde69
Added to database: 08/29/2026, 06:22:43 UTC
Last enriched: 09/08/2026, 02:52:32 UTC
Last updated: 10/13/2026, 18:48:17 UTC
Views: 67
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.
External Links
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.