CVE-2026-2097 is an Arbitrary File Upload vulnerability classified under CWE-434 affecting Flowring's Agentflow product. The flaw arises due to insufficient validation of uploaded files, allowing authenticated attackers to upload files with dangerous types such as web shells. Once uploaded, these malicious files can be executed on the server, resulting in arbitrary code execution. The vulnerability requires only low-level privileges (PR:L) and no user interaction (UI:N), which lowers the barrier for exploitation. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no attack vector (AT:N), and high impact on confidentiality, integrity, and availability (VC:H, VI:H, VA:H). The vulnerability does not require user interaction or scope change, and no known exploits have been reported yet. The affected version is listed as '0', which likely indicates an initial or baseline version of Agentflow. The lack of patch links suggests that a fix may not yet be publicly available, increasing the urgency for organizations to implement compensating controls. This vulnerability can lead to full system compromise, data breaches, and disruption of services if exploited.

For European organizations, this vulnerability poses a significant risk, particularly those using Flowring Agentflow in critical infrastructure, government, or enterprise environments. Successful exploitation can lead to unauthorized access, data exfiltration, and persistent backdoors, severely impacting confidentiality and integrity. Availability may also be compromised if attackers deploy ransomware or disrupt services. Since the vulnerability requires authentication but low privileges, insider threats or compromised credentials could facilitate exploitation. The absence of known exploits currently provides a window for proactive defense, but the high CVSS score indicates that once exploited, the damage could be severe. Organizations with internet-facing Agentflow deployments are especially vulnerable to remote attacks. The impact extends beyond individual systems to potentially affect supply chains and interconnected services within Europe.

To mitigate CVE-2026-2097, European organizations should implement strict file upload validation mechanisms, including allowlisting of acceptable file types and rejecting all others. Employ server-side checks to verify file contents and extensions, and use sandboxing or isolated environments for processing uploads. Enforce the principle of least privilege by restricting upload permissions to only necessary users and roles. Implement multi-factor authentication to reduce the risk of credential compromise. Monitor logs and network traffic for suspicious upload activity or execution of unexpected files. If possible, isolate Agentflow instances from direct internet exposure using firewalls or VPNs. Regularly audit and update credentials and review user access rights. Until an official patch is released, consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block malicious upload attempts. Engage with Flowring for updates and apply patches promptly once available.