CVE-2025-7452 is a path traversal vulnerability identified in the kone-net go-chat application, specifically affecting the GetFile function within the go-chat/api/v1/file_controller.go source file. The vulnerability arises from improper validation or sanitization of the 'fileName' argument, which an attacker can manipulate to traverse directories outside the intended file path scope. This allows an attacker to remotely access arbitrary files on the server hosting the go-chat application. The vulnerability is exploitable without user interaction and does not require elevated privileges beyond low-level privileges, making it accessible to a wider range of attackers. The vulnerability has been publicly disclosed, though no known exploits are reported in the wild at this time. The product uses a rolling release model, complicating version tracking and patch management, as no specific fixed versions are currently available. The CVSS v4.0 base score is 5.3 (medium severity), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and limited impact on confidentiality, integrity, and availability. The vulnerability could lead to unauthorized disclosure of sensitive files, potentially exposing configuration files, credentials, or other critical data stored on the server. Given the remote exploitability and the nature of path traversal, this vulnerability poses a moderate risk to organizations using kone-net go-chat, especially if sensitive data is stored or accessible via the vulnerable endpoint.

For European organizations using kone-net go-chat, this vulnerability could lead to unauthorized access to sensitive internal files, resulting in data breaches, leakage of credentials, or exposure of proprietary information. This could compromise confidentiality and potentially integrity if attackers leverage accessed files to further escalate privileges or pivot within the network. The impact is heightened for organizations that use go-chat for internal communications or file sharing, as attackers could access private messages or attachments. Additionally, regulatory frameworks such as GDPR impose strict requirements on data protection; unauthorized data exposure could lead to significant legal and financial penalties. The rolling release nature of the product may delay patch deployment, increasing exposure time. Organizations with high-value or sensitive data, such as financial institutions, healthcare providers, or government entities, face increased risk. However, the medium severity and limited scope of impact suggest that while the vulnerability is serious, it is not immediately critical unless combined with other weaknesses or exploited in targeted attacks.

European organizations should implement several specific mitigations: 1) Immediately audit and monitor access logs for suspicious file access patterns indicative of path traversal attempts. 2) Employ web application firewalls (WAFs) with custom rules to detect and block path traversal payloads targeting the 'fileName' parameter. 3) Restrict file system permissions for the go-chat application process to the minimum necessary, preventing access to sensitive directories and files outside the intended scope. 4) If possible, implement input validation and sanitization at the application or proxy level to reject or normalize suspicious file path inputs. 5) Engage with the kone-net vendor or community to track updates or patches addressing this vulnerability, and plan for rapid deployment once available. 6) Consider isolating the go-chat service in a segmented network zone to limit lateral movement in case of compromise. 7) Conduct internal penetration testing focusing on file access controls to identify and remediate similar weaknesses. These steps go beyond generic advice by focusing on compensating controls and proactive monitoring given the current absence of a patch.