CVE-2026-77783

Rank Math SEO – AI SEO Tools to Dominate SEO Rankings < 1.0.277 - Unauthenticated Information Exposure

2026-09-02 00:00
Project Black

Strategic Overview

Status
Patched in 1.0.277
Affected Plugin
Rank Math SEO – AI SEO Tools to Dominate SEO Rankings
Affected Version
< 1.0.277
CVSS
5.3Medium
Weakness type
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
CVE
CVE-2026-77783
View all Rank Math SEO – AI SEO Tools to Dominate SEO Rankings vulnerabilities

At a glance

CVE-2026-77783 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the Rank Math SEO WordPress plugin, affecting versions < 1.0.277. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.0.277; sites on affected versions should update now. Disclosed September 2026, reported by Project Black.

Vulnerability Overview

The Rank Math SEO – AI SEO Tools to Dominate SEO Rankings plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to 1.0.277. This makes it possible for unauthenticated attackers to extract sensitive user or configuration data.

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-200: Exposure of Sensitive Information to an Unauthorized Actor

Reaching this weakness in Rank Math SEO < 1.0.277 takes no account at all. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.

The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For Rank Math SEO the fix is 1.0.277: builds < 1.0.277 are affected, anything from 1.0.277 onward is not.

Remediation

Update to version 1.0.277, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Rank Math SEO 1.0.277 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-77783https://www.wordfence.com/threat-intel/vulnerabilities/id/a295004a-8206-401c-8130-4d9b37f36fb8https://nvd.nist.gov/vuln/detail/CVE-2026-77783

Related records

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