PatchSiren cyber security CVE debrief
CVE-2026-6391 eazyserver CVE debrief
The Sentence To SEO WordPress plugin is vulnerable to Cross-Site Request Forgery (CSRF) in all versions up to and including 1.0. The vulnerability exists in the create_admin_page() function due to missing or incorrect nonce validation. An unauthenticated attacker can exploit this by tricking a site administrator into clicking a malicious link, allowing the attacker to inject malicious web scripts and update plugin settings. The CVSS 3.1 score of 6.1 (MEDIUM) reflects network attack vector, low attack complexity, no privileges required, user interaction required, and scope change with low confidentiality and integrity impact. The vulnerability was disclosed on 2026-05-20 and is classified under CWE-352 (Cross-Site Request Forgery).
- Vendor
- eazyserver
- Product
- Sentence To SEO (keywords, description and tags)
- CVSS
- MEDIUM 6.1
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-05-20
- Original CVE updated
- 2026-05-20
- Advisory published
- 2026-05-20
- Advisory updated
- 2026-05-20
Who should care
WordPress site administrators using the Sentence To SEO plugin; security teams monitoring WordPress plugin vulnerabilities; web application firewall operators protecting WordPress installations
Technical summary
The Sentence To SEO plugin for WordPress fails to implement proper nonce validation in its create_admin_page() function. Nonces are cryptographic tokens used to verify the origin and intent of requests in WordPress. Without this protection, state-changing operations can be triggered by cross-origin requests. The vulnerability affects both the tagged release (1.0) and trunk development versions. Successful exploitation requires social engineering to induce an authenticated administrator to visit a malicious URL while logged into the WordPress admin panel.
Defensive priority
medium
Recommended defensive actions
- Verify if the Sentence To SEO plugin is installed and active on WordPress sites
- If the plugin version is 1.0 or earlier, consider disabling or removing the plugin until a patched version is available
- Implement additional CSRF protections at the web application firewall level for WordPress administrative endpoints
- Monitor WordPress admin logs for unexpected plugin setting changes
- Apply principle of least privilege for WordPress administrator accounts
- Review and validate all plugin update sources before installation
Evidence notes
Vulnerability confirmed via WordPress plugin repository source code analysis at tags/1.0 and trunk branches. Multiple source code references identify the affected function locations. Wordfence security advisory provides additional confirmation.
Official resources
2026-05-20