High 8.8Published Oct 27, 2026

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

Updated under an hour ago (Oct 30, 2026, 4:50 AM ET)

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It affects rankmath Rank Math SEO – AI SEO Tools to Dominate SEO Rankings. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.54%, higher than 45% of scored CVEs.

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Start free and add your stackFree account, 3 products Every CVE for rankmath Rank Math SEO – AI SEO Tools to Dominate SEO Rankings Exploited in the last 30 days

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.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.54% (percentile 45)
Assigned by: Wordfence
NVD analysis: Deferred
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 27, 2026

Affected products

Affected products

rankmath Rank Math SEO – AI SEO Tools to Dominate SEO Rankings rankmath:rank_math_seo_ai_seo_tools_to_dominate_seo_rankings (from the name)	through 1.0.276	CNA record

References

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/cd4395be-7b4c-46b0-be00-7dedc6691f4a?source=cve
https://plugins.trac.wordpress.org/browser/seo-by-rank-math/tags/1.0.263/includes/rest/class-shared.php#L446
https://plugins.trac.wordpress.org/browser/seo-by-rank-math/tags/1.0.263/includes/modules/schema/class-db.php#L66
https://plugins.trac.wordpress.org/browser/seo-by-rank-math/tags/1.0.263/includes/rest/class-sanitize.php#L110
https://plugins.trac.wordpress.org/changeset/3666725/

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.