Overview
Today we delve into a serious vulnerability, CVE-2025-6755, which targets the Game Users Share Buttons plugin for WordPress. This plugin, used extensively within the WordPress community, is popular among those looking to engage their user base with social media sharing options. Unfortunately, it has been found to have a severe vulnerability that could potentially allow an attacker to execute arbitrary code on the targeted system.
The vulnerability, which is due to insufficient file path validation in a particular function, has a significant impact. It could lead to unauthorized system access, data leakage, or even a full system compromise. Given the popularity of WordPress and the widespread use of the plugin, the implications of this vulnerability are far-reaching and demand immediate attention.
Vulnerability Summary
CVE ID: CVE-2025-6755
Severity: High (CVSS Score 8.8)
Attack Vector: Network
Privileges Required: Low (Subscriber-level)
User Interaction: Required
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
Game Users Share Buttons for WordPress | Up to 1.3.0
How the Exploit Works
The vulnerability lies in the ajaxDeleteTheme() function of the plugin, which does not adequately validate file paths. An attacker with subscriber-level access could exploit this by adding arbitrary file paths to the themeNameId parameter of an AJAX request. This could lead to deletion of critical system files or execution of remote code.
Conceptual Example Code
Here is a conceptual example of an AJAX request that an attacker might use to exploit the vulnerability:
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
action=gameusers_share_buttons_delete_theme&themeNameId=../../../../wp-config.phpIn the example above, the attacker is attempting to delete the ‘wp-config.php’ file, a critical WordPress configuration file. If successful, this could lead to significant disruptions or even allow for further exploits.
Mitigation Guidance
The best course of action to mitigate this vulnerability is to apply the vendor-supplied patch. For those who cannot immediately patch, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. These systems can help detect and block attempts to exploit this vulnerability.
As always, it’s important to keep your systems and plugins up to date to prevent exploitation of known vulnerabilities. Regularly monitoring for new patches and updates should be part of your standard security protocol. Remember, an ounce of prevention is worth a pound of cure.