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Vulnerability · Published Oct 28, 2026 · Assigned by Wordfence

CVE-2026-1928Rank Math SEO <= 1.0.276 - Authenticated (Contributor+) PHP Object Injection to Remote Code Execution

High 8.8

In plain English

A high-severity unsafe deserialization in Rank Math SEO – AI SEO Tools to Dominate SEO Rankings from rankmath. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.5%top 54.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

The Rank Math SEO – AI SEO Tools to Dominate SEO Rankings plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0.276 via deserialization of untrusted input in the updateMeta REST API endpoint. This makes it possible forauthenticated attackers, with Contributor-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to achieve remote code execution by writing a webshell to the uploads directory.

Affected products (as reported)

VendorProductVersions
rankmath Rank Math SEO – AI SEO Tools to Dominate SEO Rankings 0 – through 1.0.276

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References