CVE-2025-23949 is a Local File Inclusion (LFI) vulnerability found in the dzeriho Improved Sale Badges – Free Version WordPress plugin, specifically versions up to 1.0.1. The vulnerability arises from improper control over the filename parameter used in PHP include or require statements. This improper control allows an attacker to manipulate the filename input to include arbitrary files from the local filesystem. Such an LFI vulnerability can be exploited to read sensitive server files, such as configuration files containing database credentials, or to execute malicious PHP code if an attacker can upload files to the server. The vulnerability does not require remote file inclusion, limiting the attack to local files, but this still poses a significant risk. No known exploits have been reported in the wild as of the publication date. The plugin is commonly used in WordPress environments to display sale badges, often on e-commerce sites, making it a target for attackers seeking to compromise online stores. The lack of a CVSS score necessitates an expert severity assessment, which considers the impact on confidentiality, integrity, and availability, the ease of exploitation without authentication, and the scope of affected systems. The vulnerability is classified as high severity due to the potential for sensitive data exposure and code execution. The absence of a patch link indicates that users must rely on vendor updates or manual mitigation.

The impact of CVE-2025-23949 can be severe for organizations using the affected plugin. Successful exploitation can lead to unauthorized disclosure of sensitive information such as configuration files, user data, and credentials, compromising confidentiality. Attackers may also execute arbitrary code on the server, leading to full system compromise, data manipulation, or service disruption, thereby affecting integrity and availability. For e-commerce sites, this could result in financial losses, reputational damage, and regulatory penalties due to data breaches. The vulnerability's ease of exploitation without authentication increases the risk, especially for publicly accessible websites. Organizations with large WordPress deployments or those relying on this plugin for sales badges are particularly vulnerable. The lack of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, as attackers may develop exploits rapidly once the vulnerability is public. Overall, the threat poses a significant risk to the security posture of affected organizations worldwide.

To mitigate CVE-2025-23949, organizations should immediately assess their use of the dzeriho Improved Sale Badges – Free Version plugin and upgrade to a patched version once available. If no patch exists, consider disabling or removing the plugin to eliminate the attack surface. Implement strict input validation and sanitization on any user-controllable parameters related to file inclusion to prevent manipulation. Employ web application firewalls (WAFs) with rules targeting LFI attack patterns to detect and block exploitation attempts. Restrict file system permissions to limit the web server's access to sensitive files and directories, minimizing the impact of potential LFI exploitation. Regularly audit and monitor server logs for suspicious activity indicative of LFI attempts. Additionally, maintain up-to-date backups and incident response plans to recover quickly from potential compromises. Finally, educate development teams on secure coding practices to avoid similar vulnerabilities in custom plugins or themes.