WPUpper Share Buttons <= 3.51 - Cross-Site Request Forgery to Custom CSS Update

4.3
Cross-Site Request Forgery (CSRF)
CVE CVE-2024-13883
CVSS 4.3 (Medium)
Publicly Published February 20, 2025
Last Updated March 28, 2025
Researcher Noah Stead (TurtleBurg)

Description

The WPUpper Share Buttons plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.51. This is due to missing or incorrect nonce validation on the 'save_custom_css_request' function. This makes it possible for unauthenticated attackers to inject custom CSS to modify a site via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

References

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Vulnerability Details for WPUpper Share Buttons

Software Type Plugin
Software Slug wpupper-share-buttons (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.52, or a newer patched version
Affected Version
  • <= 3.51
Patched Version
  • 3.52

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