Nextend Social Login and Register <= 3.1.12 - Reflected Self-Based Cross-Site Scripting via error_description

5.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2024-1775
CVSS 5.4 (Medium)
Publicly Published March 1, 2024
Last Updated March 2, 2024
Researcher Tobias Weißhaar (kun_19)

Description

The Nextend Social Login and Register plugin for WordPress is vulnerable to a self-based Reflected Cross-Site Scripting via the ‘error_description’ parameter in all versions up to, and including, 3.1.12 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers, with access to a subscriber-level account, to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. NOTE: This vulnerability can be successfully exploited on a vulnerable WordPress instance against an OAuth pre-authenticated higher-level user (e.g., administrator) by leveraging a cross-site request forgery in conjunction with a certain social engineering technique to achieve a critical impact scenario (cross-site scripting to administrator-level account creation). However, successful exploitation requires "Debug mode" to be enabled in the plugin's "Global Settings".

References

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1 affected software package

Software Type Plugin
Software Slug nextend-facebook-connect (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.1.13, or a newer patched version
Affected Version
  • <= 3.1.12
Patched Version
  • 3.1.13

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