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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-1928
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-28 04:18:02 UTC
Updated2026-10-28 04:18:02 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

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

Problem Types: CWE-502 | CWE-502 CWE-502 Deserialization of Untrusted Data

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Rankmath Rank Math SEO AI SEO Tools To Dominate SEO Rankings affected 1.0.276 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/changeset/3666725 [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/seo-by-rank-math/tags/1.0.263/includes/rest/class-san... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/cd4395be-7b4c-46b0-be00-7dedc... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/seo-by-rank-math/tags/1.0.263/includes/rest/class-sha... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/seo-by-rank-math/tags/1.0.263/includes/modules/schema... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: moochi (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-02-04T20:24:58.000ZVendor Notified
CNA2026-10-27T00:00:00.000ZDisclosed

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