Wiz
Vulnerability DatabaseCVE-2023-4772

CVE-2023-4772: 
NixOS vulnerability analysis and mitigation

Overview

The Newsletter plugin for WordPress (versions up to 7.8.9) contains a Stored Cross-Site Scripting vulnerability (CVE-2023-4772) discovered in September 2023. The vulnerability exists in the 'newsletter_form' shortcode due to insufficient input sanitization and output escaping on user-supplied attributes (NVD, WPScan).

Technical details

The vulnerability is classified as a Stored Cross-Site Scripting (XSS) issue with a CVSS v3.1 base score of 6.4 (Medium) according to Wordfence, and 5.4 (Medium) according to NVD. The technical issue stems from the plugin's failure to properly validate and escape newsletter_form shortcode attributes before outputting them back in a page or post where the shortcode is embedded (WPScan).

Impact

This vulnerability allows authenticated attackers with contributor-level permissions or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever a user accesses the compromised page (NVD).

Mitigation and workarounds

The vulnerability has been patched in version 7.9.0 of the Newsletter plugin. Users are advised to update to this version or later to mitigate the security risk (WPScan).

Additional resources

Source: This report was generated using AI

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