CVE-2025-28892 identifies a Cross-Site Request Forgery (CSRF) vulnerability in the a2rocklobster FTP Sync software, specifically affecting versions up to 1.1.6. FTP Sync is a tool used to synchronize files via FTP, commonly integrated into development workflows or automated deployment pipelines. The vulnerability allows attackers to craft malicious web requests that, when executed by an authenticated user’s browser, perform unauthorized actions on the FTP Sync application without the user’s consent. This CSRF flaw leads to Stored Cross-Site Scripting (XSS), where injected malicious scripts are persistently stored and executed in the context of the victim’s browser. Stored XSS can be leveraged to steal session cookies, perform actions on behalf of the user, or deliver further malware. The root cause is the lack of proper CSRF tokens or validation mechanisms in the application’s request handling. No CVSS score has been assigned yet, and no patches or official fixes are currently available. Exploitation requires the victim to be authenticated and visit a malicious webpage controlled by the attacker. While no known exploits are reported in the wild, the combination of CSRF and stored XSS presents a significant risk to confidentiality and integrity of user data and sessions. The vulnerability affects all deployments of FTP Sync up to version 1.1.6, which may be used in various industries relying on FTP for file synchronization.

The impact of CVE-2025-28892 is substantial for organizations using a2rocklobster FTP Sync, as it allows attackers to perform unauthorized actions through CSRF, leading to stored XSS attacks. This can compromise user accounts, expose sensitive data, and enable attackers to manipulate file synchronization processes. The stored XSS aspect can facilitate session hijacking, credential theft, or the spread of malware within the victim’s environment. Organizations relying on FTP Sync for automated deployments or file transfers risk operational disruption and data integrity loss. The vulnerability undermines trust in the application’s security and can lead to broader network compromise if attackers leverage stolen credentials or session tokens. Although no exploits are currently known in the wild, the ease of exploitation via social engineering (e.g., convincing users to visit malicious sites) increases the threat level. The lack of patches means organizations must rely on mitigations until an official fix is released.

To mitigate CVE-2025-28892, organizations should immediately implement strict CSRF protections such as validating CSRF tokens on all state-changing requests within FTP Sync. If source code access is available, developers should add anti-CSRF tokens and verify the Origin and Referer headers to ensure requests originate from trusted sources. Network-level controls can be applied to restrict access to the FTP Sync interface to trusted IP ranges or VPNs. User education is critical to avoid visiting untrusted websites that could trigger CSRF attacks. Monitoring and logging should be enhanced to detect unusual or unauthorized FTP Sync activities. Until an official patch is released, consider isolating the FTP Sync service or replacing it with alternative tools that have stronger security controls. Regularly review and update authentication mechanisms to prevent session hijacking. Finally, maintain up-to-date backups of synchronized data to recover from potential malicious modifications.