CVE-2024-13883

MEDIUM 4.3

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

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-352
Vendor	victorfreitas
Product	wpupper share buttons
Published	Feb 21, 2025
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

victorfreitas / WPUpper Share Buttons

0 ≤ 3.51

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/5ca55c87-6548-43b8-a23f-d31a51df9533?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/wpupper-share-buttons/trunk/Controller/ajax.controller.php#L94 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3262537/

Credits

Noah Stead