CVE-2026-104754

Rank Math SEO <= 1.0.279 - Authenticated (Administrator+) Stored Cross-Site Scripting

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
4.4Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2026-104754
View all Rank Math SEO – AI SEO Tools to Dominate SEO Rankings vulnerabilities

At a glance

CVE-2026-104754 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Rank Math SEO WordPress plugin, affecting versions <= 1.0.279. It carries a CVSS score of 4.4 (reachable over the network). 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 Stored Cross-Site Scripting in all versions up to, and including, 1.0.279. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Rank Math SEO <= 1.0.279 takes an account at Administrator level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. 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. 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
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-104754https://www.wordfence.com/threat-intel/vulnerabilities/id/f7fa935d-6542-4541-a1fa-7c0c67114857https://nvd.nist.gov/vuln/detail/CVE-2026-104754

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C