CVE-2026-104752

Rank Math SEO <= 1.0.279 - Authenticated (Administrator+) Arbitrary File Upload

2026-10-08 00:00
Karthik Ramakrishnan

Strategic Overview

Status
Patched in 1.0.280
Affected Plugin
Rank Math SEO – AI SEO Tools to Dominate SEO Rankings
Affected Version
<= 1.0.279
CVSS
7.2High
Weakness type
CWE-434 · Unrestricted Upload of File with Dangerous Type
CVE
CVE-2026-104752
View all Rank Math SEO – AI SEO Tools to Dominate SEO Rankings vulnerabilities

At a glance

CVE-2026-104752 is a high-severity Unrestricted Upload of File with Dangerous Type vulnerability in the Rank Math SEO WordPress plugin, affecting versions <= 1.0.279. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Administrator level or above. The issue is fixed in version 1.0.280; sites on affected versions should update now. Disclosed October 2026, reported by Karthik Ramakrishnan.

Vulnerability Overview

The Rank Math SEO plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.0.279. This is due to missing file type validation. This makes it possible for authenticated attackers, with administrator-level access and above, to upload arbitrary files on the affected site's server, which may make remote code execution possible.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-434: Unrestricted Upload of File with Dangerous Type

Reaching this weakness in Rank Math SEO <= 1.0.279 takes an account at Administrator level or above. An unrestricted file upload lets a caller store a file whose type or destination the application does not properly constrain.

If an uploaded file lands anywhere the server will execute, the flaw becomes remote code execution and the site should be treated as fully compromised. For Rank Math SEO the fix is 1.0.280: builds <= 1.0.279 are affected, anything from 1.0.280 onward is not.

Remediation

Update to version 1.0.280, or a newer patched version

How does WordSec protect against this?

An attacker needs Administrator access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Rank Math SEO 1.0.280 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-104752https://www.wordfence.com/threat-intel/vulnerabilities/id/8b2e4d4e-0bd8-4e06-9968-33b20982f333https://nvd.nist.gov/vuln/detail/CVE-2026-104752

Related records

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