Rank Math SEO <= 1.0.26 - Cross-Site Scripting

2019-06-18 00:00
Anonymous

Strategic Overview

Status
Patched in 1.0.27
Affected Plugin
Rank Math SEO – AI SEO Tools to Dominate SEO Rankings
Affected Version
<= 1.0.26
CVSS
7.2High
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE pending
View all Rank Math SEO – AI SEO Tools to Dominate SEO Rankings vulnerabilities

At a glance

This record tracks a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Rank Math SEO WordPress plugin, affecting versions <= 1.0.26. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.0.27; sites on affected versions should update now. Disclosed June 2019.

Vulnerability Overview

The Rank Math SEO is vulnerable to Cross-Site Scripting via several parameters in versions up to, and including 1.0.26.

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 privileges on the target site, 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 <= 1.0.26 takes a caller who can reach the endpoint. 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 1.0.27: builds <= 1.0.26 are affected, anything from 1.0.27 onward is not.

Remediation

Update to version 1.0.27, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Rank Math SEO: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Rank Math SEO 1.0.27 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/1ed98565-3f86-46c0-a696-13d678f2d523

Related records

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