CVSS 3.1 Score 5.4 of 10 (medium)


Published Sep 6, 2023
Updated: Nov 7, 2023


CVE-2023-4779 is a vulnerability that affects the User Submitted Posts plugin for WordPress in versions up to and including 20230811. This vulnerability allows authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages using the plugin's [usp_gallery] shortcode, leading to stored cross-site scripting. The issue arises from insufficient input sanitization and output escaping on user-supplied attributes like 'before'. This vulnerability poses a medium risk with a base severity score of 5.4 according to NIST. To remediate this vulnerability, users should update their plugin to the latest version available, which contains the necessary fixes. The affected products include various versions of WordPress plugins such as bYem8Q, bYem8R, spse1q, and others.


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