CVE-2026-1928Rank Math SEO <= 1.0.276 - Authenticated (Contributor+) PHP Object Injection to Remote Code Execution
- 8.8HighCVSS base score
- 0.54%Exploitation in 30 daysEPSS · top 54% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Wordfence
- 9 months later
· 9 months later
Published
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.54% · top 54% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
rankmath · Rank Math SEO – AI SEO Tools to Dominate SEO Rankings
- affected ≤ 1.0.276
References
References5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/cd4395be-7b4c-46b0-be00-7dedc6691f4a?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/seo-by-rank-math/tags/1.0.263/includes/rest/class-shared.php#L446 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/seo-by-rank-math/tags/1.0.263/includes/modules/schema/class-db.php#L66 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/seo-by-rank-math/tags/1.0.263/includes/rest/class-sanitize.php#L110 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset/3666725/ (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-111576 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-1928)Record last updated .