WordPress plugin
Premium SEO — Malicious Plugin
CVE-2026-14812Published · Updated Action summary
Affected: all versionsNo patch available
What to do until a fix shipsCritical9.8CVSS 3.19.8CISA KEVNot listedAccessNo account needed
On this page3
Overview
- Advisory ID
- CVE-2026-14812
- Product
- Premium SEO Premium-SEO
- Affected
- all versions
- Fixed in
- no fix yet
- Weakness
- CWE-912 Hidden Functionality
- Required access
- No account needed
- Published
- · updated
- Credit
- Erwan LR, WPscan
- Source
- Wordfence Intelligence
- Affectedall versions
- PatchedNo fix yet
No patched version available.
9.8
CVSS 3.1 · CNA (Wordfence)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
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.
Not sure which version you run? Run a passive check — it reads public files only.
Remediation & mitigations
- No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
References & provenance
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Timeline
CVE published
Severity critical, CVSS 9.8
Record last updated
Sources & licenses
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.