CVE-2026-6391

Description

The Sentence To SEO (keywords, description and tags) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing or incorrect nonce validation on the create_admin_page() function. This makes it possible for unauthenticated attackers to inject malicious web scripts and update plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CVSS v3.1 Score

6.1

MEDIUM

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

EPSS — Exploit Prediction

0.0002

Probability of exploitation

0.05%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-352 Cross-Site Request Forgery

References

Other References

https://plugins.trac.wordpress.org/browser/sentence-to-seo/tags/1.0/index.php#L50 https://plugins.trac.wordpress.org/browser/sentence-to-seo/tags/1.0/index.php#L75 https://plugins.trac.wordpress.org/browser/sentence-to-seo/tags/1.0/index.php#L81 https://plugins.trac.wordpress.org/browser/sentence-to-seo/tags/1.0/index.php#L87 https://plugins.trac.wordpress.org/browser/sentence-to-seo/trunk/index.php#L50 https://plugins.trac.wordpress.org/browser/sentence-to-seo/trunk/index.php#L75 https://plugins.trac.wordpress.org/browser/sentence-to-seo/trunk/index.php#L81 https://plugins.trac.wordpress.org/browser/sentence-to-seo/trunk/index.php#L87 https://www.wordfence.com/threat-intel/vulnerabilities/id/add32c06-90d0-466f-b176-aaae55cf03fb?source=cve

Frequently Asked Questions

What is CVE-2026-6391? +

The Sentence To SEO (keywords, description and tags) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing or incorrect nonce validation on the create_admin_page() function. This makes it possible for unauthenticated attackers to inject malicious web scripts and update plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2026-6391? +

CVE-2026-6391 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0002, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-6391? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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