CVE-2024-13883: WPUpper Share Buttons <= 3.51 - Cross-Site Request Forgery to Custom CSS Update
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.
Classification
CVE ID: CVE-2024-13883
CVSS Base Severity: MEDIUM
CVSS Base Score: 4.3
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Problem Types
CWE-352 Cross-Site Request Forgery (CSRF)Affected Products
Vendor: victorfreitas
Product: WPUpper Share Buttons
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.01% (probability of being exploited)
EPSS Percentile: 0.84% (scored less or equal to compared to others)
EPSS Date: 2025-03-22 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2024-13883https://www.wordfence.com/threat-intel/vulnerabilities/id/5ca55c87-6548-43b8-a23f-d31a51df9533?source=cve
https://plugins.trac.wordpress.org/browser/wpupper-share-buttons/trunk/Controller/ajax.controller.php#L94