CVE-2026-6391
Deferred Deferred - Pending Action
Cross-Site Request Forgery in Sentence To SEO WordPress Plugin

Publication date: 2026-05-20

Last updated on: 2026-05-20

Assigner: Wordfence

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.
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Meta Information
Published
2026-05-20
Last Modified
2026-05-20
Generated
2026-06-09
AI Q&A
2026-05-20
EPSS Evaluated
2026-06-08
NVD
CVE-2026-6391
EUVD
EUVD-2026-31031
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
sentence_to_seo plugin to 1.0 (inc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-352 The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.
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Executive Summary

The Sentence To SEO plugin for WordPress has a vulnerability known as Cross-Site Request Forgery (CSRF) in all versions up to and including 1.0. This occurs because the plugin's create_admin_page() function lacks proper nonce validation, which is a security measure to verify requests.

As a result, an attacker who is not authenticated can trick a site administrator into performing an action, such as clicking a malicious link, which then allows the attacker to inject harmful web scripts and change the plugin's settings without permission.

Impact Analysis

This vulnerability can lead to unauthorized changes in your WordPress plugin settings and the injection of malicious scripts. Such actions can compromise the security and integrity of your website.

  • Attackers can manipulate plugin settings without your consent.
  • Malicious scripts injected could lead to further exploitation or data compromise.
  • Since the attack requires tricking an administrator, it exploits user interaction, making it harder to detect.
Mitigation Strategies

The vulnerability exists in all versions up to and including 1.0 of the Sentence To SEO plugin for WordPress due to missing or incorrect nonce validation in the create_admin_page() function.

To mitigate this vulnerability, you should update the Sentence To SEO plugin to a version later than 1.0 where the issue is fixed.

Additionally, as a precaution, avoid clicking on suspicious links or performing actions from untrusted sources that could trigger forged requests.

Compliance Impact

The vulnerability in the Sentence To SEO plugin allows unauthenticated attackers to perform Cross-Site Request Forgery (CSRF) attacks, potentially injecting malicious scripts and altering plugin settings by tricking site administrators.

Such unauthorized changes and potential data manipulation could lead to breaches of data integrity and confidentiality, which are critical aspects of compliance with standards like GDPR and HIPAA.

If exploited, this vulnerability might result in unauthorized access or modification of sensitive information, thereby risking non-compliance with regulations that require protection of personal and health data.

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