CVE-2026-1928

HighCVSS 8.8/10Last modified Oct 29, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-502

Affected software

Vendor	Product	Versions
rankmath	Rank Math SEO – AI SEO Tools to Dominate SEO Rankings	<= 1.0.276

References

Timeline

Published: Oct 28, 2026
Last modified: Oct 29, 2026
NVD status: Deferred

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