CVE-2026-1928 json
Rank Math SEO <= 1.0.276 - Authenticated (Contributor+) PHP Object Injection to Remote Code Execution
published 2026-10-28 12 d ago modified 2026-10-29 11 d ago also EUVD-2026-111576
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 11 d ago
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- rankmath Rank Math SEO – AI SEO Tools to Dominate SEO Rankings
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/cd4395be-7b4c-46b0-be00-7dedc6691f4a?source=cve
- plugins.trac.wordpress.org /browser/seo-by-rank-math/tags/1.0.263/includes/rest/class-shared.php#L446
- plugins.trac.wordpress.org /browser/seo-by-rank-math/tags/1.0.263/includes/modules/schema/class-db.php#L66
- plugins.trac.wordpress.org /browser/seo-by-rank-math/tags/1.0.263/includes/rest/class-sanitize.php#L110
- plugins.trac.wordpress.org /changeset/3666725/
Sources
- CVE List CVE-2026-1928
- NVD CVE-2026-1928
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.