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CVE-2026-12255— MainWP Child < 6.1.2 - Unauthenticated Administrator Authentication Bypass via Passwordless Site Registration

Quick assessment

Affected
Unknown MainWP Child
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.

WordPress MainWP Child是WordPress基金会的一款CMS管理插件。 WordPress MainWP Child 6.1.2之前版本存在授权问题漏洞，该漏洞源于在站点注册请求处理程序中未验证请求者身份，当目标账户密码认证被禁用时，允许未认证攻击者通过单个注册请求获取该账户的有效认证会话，包括管理员账户。

AI Predicted 9.8 Difficulty: Easy EPSS 0.27% · P20

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown MainWP Child < 6.1.2 affected
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I. Basic Information for CVE-2026-12255

Vulnerability Information
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Vulnerability Title
MainWP Child < 6.1.2 - Unauthenticated Administrator Authentication Bypass via Passwordless Site Registration
Source: CVE Program / CVE List V5
Vulnerability Description
The MainWP Child WordPress plugin before 6.1.2 does not verify the requester's identity in its site-registration request handler when password authentication has been disabled for the targeted account, allowing an unauthenticated attacker to obtain a valid authentication session as that account, including an administrator, by naming its login in a single registration request.
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
Vulnerability Title
WordPress MainWP Child 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress MainWP Child是WordPress基金会的一款CMS管理插件。 WordPress MainWP Child 6.1.2之前版本存在授权问题漏洞，该漏洞源于在站点注册请求处理程序中未验证请求者身份，当目标账户密码认证被禁用时，允许未认证攻击者通过单个注册请求获取该账户的有效认证会话，包括管理员账户。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown MainWP Child 0 ~ 6.1.2 -

II. Public POCs for CVE-2026-12255

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III. Intelligence Information for CVE-2026-12255

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Vendor Advisories for CVE-2026-12255 (1)

Same Patch Batch · Unknown · 2026-07-27 · 23 CVEs total

CVE-2026-13714 Realtyna Organic IDX plugin + WPL Real Estate < 5.3.0 - Unauthenticated Arbitrary File Upl
CVE-2026-14820 Quiz And Survey Master < 11.1.3 - Unauthenticated User Enumeration and Password Oracle via
CVE-2026-14827 Calendar < 1.3.18 - Contributor+ Stored XSS via event_link Parameter
CVE-2026-9830 BookingPress Pro < 5.7.3 - Unauthenticated Customer PII Disclosure and Booking Tampering v
CVE-2026-14203 Smart Manager < 8.92.0 - Contributor+ Stored XSS via Post Title
CVE-2026-14568 WP User Frontend < 4.3.8 - Unauthenticated Author-less Attachment Deletion
CVE-2026-14236 Contact Form 7 – PayPal & Stripe Add-on < 2.5 - Open Redirect
CVE-2026-14289 WP FacturaONE < 5.37 - Unauthenticated Remote Code Execution
CVE-2026-14235 WordPress Download Manager < 3.3.62 - Unauthorized Protected File Download via Reusable Do
CVE-2026-13597 QRcode Login for WeChat <= 1.3 - Unauthenticated Account Takeover
CVE-2026-13726 Multiple Page Generator Plugin – MPG < 4.1.8 - Reflected XSS via mpg_shortcode
CVE-2026-10082 Advanced Ads – Ad Manager & AdSense < 2.0.23 - Contributor+ Stored XSS via the_ad Shortcod
CVE-2026-14190 Sina Extension for Elementor < 3.10.2 - Reflected XSS
CVE-2026-14189 WPBot AI ChatBot < 8.5.2 - Admin+ Second-Order SQL Injection via qc_bot_str_fields
CVE-2026-13400 Simply Schedule Appointments < 1.6.12.4 - Unauthenticated Stored XSS via Booking Customer
CVE-2026-13332 Masteriyo LMS < 2.3.1 - Unauthenticated Arbitrary User Session Termination (Denial of Serv
CVE-2026-13390 The Events Calendar < 6.16.5.1 - Unauthenticated Event Aggregator Import Status Manipulati
CVE-2026-13152 Custom Fields Account Registration For WooCommerce < 1.4 - Unauthenticated Privilege Escal
CVE-2026-12982 Document Gallery < 5.1.1 - Reflected XSS via dg_generate_gallery
CVE-2026-12394 MemberGlut < 1.1.5 - Unauthenticated Privilege Escalation to Administrator

Showing top 20 of 23 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: MainWP Child
Same vendor: Unknown

V. Comments for CVE-2026-12255

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