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CVE-2026-16259— Uix UserCenter <= 1.0.3 - Unauthenticated Privilege Escalation

Quick assessment

Affected
Unknown Uix UserCenter
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Uix UserCenter WordPress 插件（版本 1.0.3 及以下版本）存在一个安全漏洞：该插件未验证通过未经身份验证的资料更新操作所修改的账户是否属于请求者本人。此外，用于认证该操作的令牌，其签名密钥在所有安装实例中均为硬编码且完全相同，这使得未经身份验证的攻击者能够为任意用户伪造令牌，进而覆盖管理员的邮箱地址和密码，从而实现账户接管。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.28% · P19

Possible ATT&CK Techniques 2 AI

T1079 T1098 · Account Manipulation

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Uix UserCenter ≤ 1.0.3 affected
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I. Basic Information for CVE-2026-16259

Vulnerability Information
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Vulnerability Title
Uix UserCenter <= 1.0.3 - Unauthenticated Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability Description
The Uix UserCenter WordPress plugin through 1.0.3 does not verify that the account being modified through an unauthenticated profile-update action belongs to the requester, and it authenticates that action with a token whose signing key is hardcoded and identical across every install, allowing unauthenticated attackers to forge a token for any user, overwrite an administrator's email and password, and take over the account.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Uix UserCenter 0 ~ 1.0.3 -

II. Public POCs for CVE-2026-16259

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III. Intelligence Information for CVE-2026-16259

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Proof of Concept for CVE-2026-16259 (1)

Same Patch Batch · Unknown · 2026-08-29 · 26 CVEs total

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CVE-2026-81200 MasterStudy LMS < 3.7.42 - Instructor+ Cross-Tenant Order Billing PII Disclosure via IDOR
CVE-2026-81342 MasterStudy LMS < 3.7.43 - Unauthenticated Open Redirect
CVE-2026-81346 Frontend Admin by DynamiApps < 3.29.11 - Subscriber+ Arbitrary Membership Plan Deletion
CVE-2026-81026 MasterStudy LMS < 3.7.40 - Unauthenticated Payment Bypass via PayPal IPN
CVE-2026-80311 Stripe Payment Forms by WP Full Pay < 8.5.5 - Cross-Customer Subscription Cancellation via
CVE-2026-80488 WP Ultimate CSV Importer < 9.0 - Admin+ SQLi via AIOSEO Import Fields
CVE-2026-77704 Amelia 1.2.32 - 2.4.8 - Amelia Customer+ Appointment Status Update and Self-Approval
CVE-2026-77786 Rank Math SEO < 1.0.277 - Editor+ Core Settings Modification via fix-site-seo Ability
CVE-2026-76586 BookingPress 1.5.6 - 1.6.2 - Unauthenticated Booking Price Manipulation via PayPal Payment
CVE-2026-77010 HEL Online Classroom: AI-powered Online Classrooms <= 1.0.3 - Unauthenticated Moderator Jo
CVE-2026-77012 Icollect <= 1.0.0 - Unauthenticated Arbitrary File Read, SSRF and Path Traversal File Writ
CVE-2026-77008 HEL Online Classroom: AI-powered Online Classrooms <= 1.0.3 - Unauthenticated Plugin Setti
CVE-2026-16600 SmartAIPress <= 1.2.0 - Subscriber+ Server-Side Request Forgery via smartaipress_openai_up
CVE-2026-76547 Profile Builder < 4.0.1 - Admin+ PHP Object Injection via Import/Export
CVE-2026-76548 Profile Builder < 4.0.1 - Unauthenticated Unpublished Content and Media Modification via F
CVE-2026-17520 Newsletters < 4.17 - Unauthenticated API Access via Predictable API Key
CVE-2026-17522 Newsletters < 4.17 - Arbitrary Plugin Option Update via CSRF
CVE-2026-76546 Profile Builder < 4.0.1 - Contributor+ Stored XSS via Format Date Shortcode
CVE-2026-19430 CatFolders Document Gallery Pro < 2.0.7 - Unauthenticated Missing Authorization via downlo

Showing top 20 of 26 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same vendor: Unknown

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