Post Snippets <= 4.0.2 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'snippet_content'

4.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2023-25459
CVSS 4.4 (Medium)
Publicly Published May 9, 2023
Last Updated January 22, 2024
Researcher Abdi Pranata

Description

The Post Snippets plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘snippet_content’ parameter in versions up to, and including, 4.0.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only impacts multi-site installations and installations where unfiltered_html has been disabled.

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1 affected software package

Software Type Plugin
Software Slug post-snippets (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.0.3, or a newer patched version
Affected Version
  • <= 4.0.2
Patched Version
  • 4.0.3

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