CVE-2026-81583— Theme My Login 7.0 - 7.1.15 - Subscriber+ Unauthorised Multisite Site Creation and Privilege Escalation
Quick assessment
Affected
Unknown Theme My Login
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.
My Login WordPress 插件在 7.2.0 之前，在多站点（Multisite）环境中处理站点注册时，未强制执行网络的注册设置。这导致拥有订阅者（Subscriber）账号的用户，以及某些网络中未认证的用户，能够创建新站点，并获得这些新站点的管理员权限。
Possible ATT&CK Techniques 1 AI
T1078 · Valid AccountsAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Unknown | Theme My Login | 7.0< 7.2.0 |
affected |
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I. Basic Information for CVE-2026-81583
Vulnerability Information
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Vulnerability Title
Theme My Login 7.0 - 7.1.15 - Subscriber+ Unauthorised Multisite Site Creation and Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability Description
The My Login WordPress plugin before 7.2.0 does not enforce the network's registration setting when processing site signups on multisite installations, allowing users with a subscriber account, and unauthenticated users on some networks, to create new sites and be granted administrator over them.
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 | Theme My Login | 7.0 ~ 7.2.0 | - |
|
II. Public POCs for CVE-2026-81583
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
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Proof of Concept for CVE-2026-81583 (1)
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🔗 Theme My Login 7.0 – 7.1.15 – Subscriber+ Unauthorised Multisite Site Creation and Privilege Escalation | CVE 2026-81583 | Plugin Vulnerabilities exploit vdb-entry technical-description
Same Patch Batch · Unknown · 2026-09-02 · 66 CVEs total
| CVE-2026-4357 | 10.0 CRITICAL | Embed HTML5 Game <= 1.3 - Unauthenticated Arbitrary File Upload |
| CVE-2026-77009 | 9.9 CRITICAL | WatchMan-Site7 3.1.1 - 4.2.0 - Subscriber+ RCE via Debug Console |
| CVE-2025-9314 | 9.8 CRITICAL | Developer Tools <= 1.1.3 – Unauthenticated Arbitrary File Upload |
| CVE-2025-15485 | 8.2 HIGH | Auto x LINE <= 1.0.0 – Unauthenticated REST API Endpoints Call |
| CVE-2026-83547 | 6.8 MEDIUM | Xpro Elementor Addons 1.6.0 - 1.7.3 - Contributor+ Stored XSS via Multiple Widgets |
| CVE-2026-82884 | 6.8 MEDIUM | All in One SEO < 5.0.0.1 - Contributor+ Stored XSS via ai-assistant Block |
| CVE-2026-10821 | 6.6 MEDIUM | Yoast SEO Premium < 27.6.1 - Author+ Arbitrary .htaccess Directive Injection to RCE |
| CVE-2026-2688 | 6.5 MEDIUM | CM HIPAA Forms < 3.2.0 - Unauthenticated Authorization Bypass |
| CVE-2024-3773 | 5.9 MEDIUM | LiveJournal Shortcode <= 1.1.1 - Contributor+ Stored XSS via Shortcode |
| CVE-2026-2811 | 5.4 MEDIUM | Ajaxify Comments < 3.2 - Unauthenticated HTTP Header Injection |
| CVE-2026-8151 | 5.4 MEDIUM | Simple Membership MailChimp Integration < 1.9.8 - API Key Update via CSRF |
| CVE-2025-15481 | 5.3 MEDIUM | Notification Bar for WordPress <= 1.1.8 – Unauthenticated Subscriber Data Disclosure |
| CVE-2026-17563 | 5.3 MEDIUM | WP User Frontend < 4.3.11 - Unauthenticated Post Creation via Subscription-Gated Form |
| CVE-2025-8945 | 5.3 MEDIUM | Wp Edit Password Protected < 1.3.5 - Protection Bypass via REST API |
| CVE-2025-15490 | 5.3 MEDIUM | Passster < 4.2.26 - Global Protection Bypass |
| CVE-2026-77793 | 5.3 MEDIUM | RegistrationMagic < 6.0.9.9 - Unauthenticated Payment Bypass via Omitted Price Field |
| CVE-2026-77794 | 5.3 MEDIUM | RegistrationMagic 6.0.0.0 - 6.0.9.8 - Unauthenticated Payment Bypass via Zero Quantity |
| CVE-2025-15489 | 5.3 MEDIUM | Passster < 4.2.24 - Password Protection Bypass |
| CVE-2026-83533 | 5.3 MEDIUM | WP Express Checkout < 2.4.9 - Unauthenticated Payment Bypass via wpec_process_payment |
| CVE-2026-78153 | 5.3 MEDIUM | Restrict User Access 2.6 - 2.8 - Unauthenticated Content Protection Bypass via REST API Ro |
Showing top 20 of 66 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Theme My Login
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CVE-2026-83628
Theme My Login <= 7.1.15 - Authenticated (Subscriber+) Missi -
CVE-2026-66681
WordPress theme My Login plugin <= 7.1.14 - Cross Site Reque -
CVE-2025-60098
WordPress Theme My Login Plugin <= 7.1.12 - Broken Access Co -
CVE-2024-7422
Theme My Login <= 7.1.7 - Cross-Site Request Forgery to Sett -
CVE-2024-32525
WordPress Theme My Login plugin <= 7.1.6 - Broken Access Con
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Xpro Elementor Addons < 1.7.8 - Unauthenticated Draft/Privat
V. Comments for CVE-2026-81583
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