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CVE-2026-14812— Premium SEO - Unauthenticated Backdoor (Admin Creation / RCE / SSRF / Content Injection)

Quick assessment

Affected
Unknown Premium SEO
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.

Yoast BV Yoast SEO Premium是Yoast BV公司的一款网站搜索引擎优化插件。 Yoast BV Yoast SEO Premium存在安全漏洞，该漏洞源于插件内置未经身份验证的后门，可能导致攻击者创建隐藏管理员账户、远程代码执行、服务端请求伪造和任意前端脚本/内容注入，从而完全控制受影响站点。

CVSS 10.0 · Critical EPSS 0.83% · P56

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Premium SEO ≤ * affected
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I. Basic Information for CVE-2026-14812

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Premium SEO - Unauthenticated Backdoor (Admin Creation / RCE / SSRF / Content Injection)
Source: CVE Program / CVE List V5
Vulnerability Description
The Premium SEO WordPress plugin is malicious: it ships an unauthenticated backdoor that creates a hidden administrator account and, in some builds, also enables remote code execution, server-side request forgery and arbitrary front-end script/content injection, giving an unauthenticated attacker full control of the affected site.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Yoast BV Yoast SEO Premium 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Yoast BV Yoast SEO Premium是Yoast BV公司的一款网站搜索引擎优化插件。 Yoast BV Yoast SEO Premium存在安全漏洞，该漏洞源于插件内置未经身份验证的后门，可能导致攻击者创建隐藏管理员账户、远程代码执行、服务端请求伪造和任意前端脚本/内容注入，从而完全控制受影响站点。
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 Premium SEO 0 ~ * -

II. Public POCs for CVE-2026-14812

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III. Intelligence Information for CVE-2026-14812

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News Coverage for CVE-2026-14812 (1)

Same Patch Batch · Unknown · 2026-08-06 · 49 CVEs total

CVE-2026-11976 10.0 CRITICAL MonsterInsights Pro 10.2.0/10.2.2 - Backdoored via AWS S3 bucket compromise
CVE-2026-17032 9.8 CRITICAL Supsystic Multiple Pro Plugins - Backdoor via Compromised Vendor Update Server
CVE-2026-3430 8.6 HIGH Creative Mail 1.6.5 - 1.6.9 - Unauthenticated SQLi
CVE-2026-16620 7.5 HIGH WPC Name Your Price for WooCommerce < 2.2.5 - Unauthenticated Price Manipulation via Selec
CVE-2026-16619 7.5 HIGH miniOrange 2FA < 6.2.8 - 2FA Bypass via Unlimited Second-Factor Attempts
CVE-2026-10599 7.5 HIGH Integrate PhonePe with WooCommerce <= 1.2.1 - Unauthenticated Payment Bypass via Transacti
CVE-2026-12584 7.5 HIGH Payment Gateway for Redsys & WooCommerce Lite < 7.0.2 - Unauthenticated Payment Confirmati
CVE-2026-13399 7.5 HIGH Payment Plugins for PayPal WooCommerce < 2.0.20 - Unauthenticated Payment Bypass via Reuse
CVE-2026-10524 7.5 HIGH CoCart < 4.9.0 - Unauthenticated Arbitrary Price Manipulation
CVE-2026-5336 6.8 MEDIUM Dataverse Integration < 2.91 - Contributor+ Server-Side Template Injection (SSTI) to Infor
CVE-2026-11361 5.9 MEDIUM Formidable Forms < 6.32.1 - Unauthenticated Payment Bypass via PayPal APPROVAL_PENDING Sub
CVE-2026-12901 5.9 MEDIUM GetPaid < 2.8.55 - Unauthenticated Worldpay Payment Bypass via Insufficient IPN Verificati
CVE-2026-14831 5.3 MEDIUM Easy Booking < 3.5.0 - Unauthenticated Minimum Booking Duration Bypass
CVE-2026-14936 5.3 MEDIUM Simple Membership < 4.7.7 - Unauthenticated Payment Bypass via Missing PayPal IPN Receiver
CVE-2026-15152 5.3 MEDIUM WP Hotel Booking < 2.3.2 - Unauthenticated PayPal Payment Bypass
CVE-2026-15208 5.3 MEDIUM RegistrationMagic < 6.0.9.5 - Unauthenticated Payment Bypass via Amount-Blind PayPal Verif
CVE-2026-16067 5.3 MEDIUM Event Booking Manager for WooCommerce (Pro) < 5.0.3 - Unauthenticated Payment Bypass via C
CVE-2026-13342 5.3 MEDIUM Security Optimizer – The All-In-One Protection Plugin < 1.6.5 - Login Access IP Allowlist
CVE-2026-15149 5.3 MEDIUM WP Hotel Booking < 2.3.3 - Unauthenticated Payment Bypass via Price Manipulation
CVE-2026-15147 5.3 MEDIUM Five Star Restaurant Reservations < 2.7.23 - Unauthenticated Payment Bypass and Booking Co

Showing top 20 of 49 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same vendor: Unknown

V. Comments for CVE-2026-14812

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