Yoast SEO Premium <= 27.6.0 — Authenticated (Author+) Remote Code Execution
CVE-2026-10821Published · Updated Action summary
Affected: ≤27.6.0Update to 27.6.1 or newer
All remediation steps- Severity
- High8.8
- CVSS
- 8.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Yoast SEO Premium wordpress-seo-premium
- Affected≤ 27.6.0
- Patched in27.6.1
Update to 27.6.1 or newer.
You are affected if you run ≤ 27.6.0. Version 27.6.1 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Yoast SEO Premium.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 27.6.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Yoast SEO Premium to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Tin Pham, Hao Ngo, Trong Pham.
The Yoast SEO Premium plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 27.6.0. This is due to insufficient validation of user supplied input before it is executed. This makes it possible for authenticated attackers, with author-level access and above, to execute arbitrary code on the server.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Yoast SEO Premium
All 4| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.3 | Missing Authorization ≤26.6Update to 26.7 | CVE-2026-40722 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting 25.7 – 25.9Update to 26.0 | CVE-2025-11241 | |
| Medium5.3 | Missing Authorization to Zapier Key Reset ≤20.4Update to 20.5 | CVE-2023-28775 |
- Medium4.3Missing Authorization
≤26.6Update to 26.7
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
25.7 – 25.9Update to 26.0
- Medium5.3Missing Authorization to Zapier Key Reset
≤20.4Update to 20.5
Timeline
CVE published
Severity high, CVSS 8.8
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.