CVE-2025-47467 is a medium-severity vulnerability classified under CWE-862 (Missing Authorization) affecting the GS Testimonial Slider plugin developed by GS Plugins. This vulnerability arises due to improperly configured access control mechanisms within the plugin, which allows users with limited privileges (requiring at least some level of authentication) to perform actions or access functionalities that should be restricted. The vulnerability affects all versions of the GS Testimonial Slider plugin up to and including version 3.3.0. The CVSS 3.1 base score is 4.3, indicating a medium severity level, with the vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. This means the vulnerability can be exploited remotely over the network with low attack complexity, requires privileges (low-level user), does not require user interaction, and impacts integrity but not confidentiality or availability. Specifically, the vulnerability allows an authenticated user with limited privileges to bypass authorization checks and potentially modify or manipulate testimonial slider content or settings, which could lead to unauthorized content changes or defacement. Although there are no known exploits in the wild at this time and no patches have been published yet, the vulnerability represents a risk for websites using this plugin, especially those relying on it for customer testimonials or user-generated content display. The lack of proper authorization checks could be leveraged by attackers to alter displayed content, potentially damaging reputation or misleading end users.

For European organizations, especially those operating websites with customer-facing testimonial sliders powered by GS Testimonial Slider, this vulnerability could lead to unauthorized modification of displayed content. This can undermine trust, damage brand reputation, and potentially violate regulatory requirements related to data integrity and consumer protection. While the vulnerability does not directly impact confidentiality or availability, the integrity compromise could be exploited for misinformation or social engineering attacks. Organizations in sectors such as e-commerce, hospitality, and professional services that heavily rely on testimonials for marketing could be particularly affected. Additionally, organizations subject to EU regulations like GDPR must consider the reputational and compliance risks arising from unauthorized content manipulation. Since exploitation requires at least low-level authenticated access, insider threats or compromised user accounts could be leveraged to exploit this vulnerability.

1. Immediate mitigation should include restricting user roles and permissions to the minimum necessary, ensuring that only trusted users have access to functionalities related to the testimonial slider. 2. Monitor and audit user activities related to the plugin to detect any unauthorized changes promptly. 3. Until an official patch is released, consider disabling or removing the GS Testimonial Slider plugin if it is not critical to business operations. 4. Implement web application firewalls (WAF) with custom rules to detect and block suspicious requests targeting the plugin's endpoints. 5. Regularly check for updates from GS Plugins and apply patches as soon as they become available. 6. Conduct security reviews of all third-party plugins and enforce strict access control policies across the web infrastructure. 7. Educate administrators and content managers about the risks of privilege misuse and enforce strong authentication mechanisms to reduce the risk of account compromise.