CVE-2025-58955 is a vulnerability classified as Improper Control of Filename for Include/Require Statement in the PHP program Karzo developed by designervily. This vulnerability manifests as a Local File Inclusion (LFI) flaw, where the application fails to properly validate or restrict user-supplied input used in PHP include or require statements. As a result, an attacker can manipulate the filename parameter to include arbitrary files from the server's filesystem. This can lead to sensitive information disclosure, such as configuration files, source code, or credentials, and in some cases, may facilitate remote code execution if combined with other vulnerabilities or writable file locations. The affected product versions include all releases prior to 2.6, with no patch currently available at the time of publication. The vulnerability was reserved on September 6, 2025, and published on October 22, 2025. No known exploits are reported in the wild yet, but the nature of LFI vulnerabilities makes them attractive targets for attackers. The lack of a CVSS score means severity must be assessed based on impact and exploitability factors. Since the flaw does not require authentication and can be triggered remotely via crafted HTTP requests, it poses a significant risk to web applications using Karzo. The vulnerability primarily impacts the confidentiality and integrity of affected systems, with potential availability impacts if attackers leverage it to execute malicious code or disrupt services.

For European organizations, the impact of CVE-2025-58955 can be substantial, especially for those relying on Karzo in web-facing environments. Successful exploitation could lead to unauthorized disclosure of sensitive corporate or customer data, including internal configuration files and credentials, undermining confidentiality. Attackers might also leverage the vulnerability to execute arbitrary code or pivot within the network, threatening system integrity and availability. This could result in data breaches, regulatory non-compliance (e.g., GDPR violations), reputational damage, and operational disruptions. Organizations in sectors with high web application exposure such as e-commerce, finance, and public services are particularly at risk. The absence of a patch at the time of disclosure increases the window of exposure, emphasizing the need for immediate mitigations. Additionally, the vulnerability's ease of exploitation without authentication broadens the attack surface, potentially enabling widespread scanning and automated attacks targeting European entities using Karzo.

To mitigate CVE-2025-58955, organizations should first monitor for the release of an official patch or update from designervily and apply it promptly once available (version 2.6 or later). Until then, implement strict input validation and sanitization on all user inputs that influence file inclusion paths, ensuring only expected and safe filenames are accepted. Employ whitelisting techniques to restrict file inclusion to predefined directories or files. Use web application firewalls (WAFs) configured to detect and block suspicious patterns indicative of LFI attempts, such as directory traversal sequences or unusual parameter values. Conduct code reviews and security testing focused on file inclusion logic within Karzo deployments. Additionally, restrict file system permissions to limit the web server's access to sensitive files and directories, minimizing the potential impact of an LFI exploit. Regularly audit logs for anomalous access patterns and prepare incident response plans to quickly address any exploitation attempts.