CVE-2026-77784

Rank Math SEO – AI SEO Tools to Dominate SEO Rankings < 1.0.277 - Missing Authorization to Authenticated (Author+) SEO Object Updates

2026-09-03 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
4.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-77784
View all Rank Math SEO – AI SEO Tools to Dominate SEO Rankings vulnerabilities

At a glance

CVE-2026-77784 is a medium-severity Missing Authorization vulnerability in the Rank Math SEO WordPress plugin, affecting versions < 1.0.277. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Author level or above. 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 unauthorized access due to a missing capability check on a function in all versions up to 1.0.277 (exclusive). This makes it possible for authenticated attackers, with Author-level access and above, to update SEO objects.

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.

CWE-862: Missing Authorization

Reaching this weakness in Rank Math SEO < 1.0.277 takes an account at Author level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. 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?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. 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-2026-77784https://www.wordfence.com/threat-intel/vulnerabilities/id/97acf80f-2a50-457a-8418-1b99408c6e9dhttps://nvd.nist.gov/vuln/detail/CVE-2026-77784

Related records

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