CVE-2026-3065 is a command injection vulnerability identified in the HummerRisk software product, affecting all versions up to and including 1.5.0. The flaw resides in the CommandUtils.commonExecCmdWithResult method within the CloudTaskService.java source file, part of the Cloud Task Dry-run component. This method improperly sanitizes or validates the input parameter fileName, allowing an attacker to inject arbitrary operating system commands. Because the vulnerability is remotely exploitable without requiring authentication or user interaction, an attacker can execute commands on the underlying system with the privileges of the HummerRisk service. The CVSS 4.0 base score is 5.3 (medium), reflecting the moderate impact and ease of exploitation. The vendor was contacted early but has not issued a patch or mitigation guidance. The exploit code has been publicly disclosed, increasing the risk of exploitation. The vulnerability can lead to unauthorized command execution, potentially compromising system confidentiality, integrity, and availability. No known active exploitation campaigns have been reported to date. The lack of vendor response and public exploit availability necessitate immediate defensive actions by users of affected versions.

The vulnerability enables remote attackers to execute arbitrary commands on systems running vulnerable HummerRisk versions, potentially leading to unauthorized data access, modification, or destruction. This can compromise confidentiality by exposing sensitive information, integrity by altering data or system configurations, and availability by disrupting service operations. Since the attack requires no authentication or user interaction, the attack surface is broad, increasing risk. Organizations relying on HummerRisk for critical risk management or cloud task automation may face operational disruptions, data breaches, or lateral movement within their networks. The absence of a vendor patch and public exploit availability heighten the urgency. Although no active exploitation is currently known, the vulnerability could be leveraged by threat actors for espionage, sabotage, or ransomware deployment, especially in environments where HummerRisk is integrated with other critical infrastructure.

1. Immediately restrict network access to HummerRisk management interfaces to trusted administrators only, using firewalls or network segmentation. 2. Monitor logs for unusual command execution patterns or unexpected process launches originating from the Cloud Task Dry-run component. 3. Employ application-layer firewalls or runtime application self-protection (RASP) solutions that can detect and block command injection attempts targeting the fileName parameter. 4. If possible, disable or isolate the Cloud Task Dry-run functionality until a vendor patch or official mitigation is available. 5. Conduct a thorough audit of systems running HummerRisk to identify any signs of compromise or unauthorized command execution. 6. Engage in proactive threat hunting focused on this vulnerability’s indicators of compromise. 7. Follow vendor channels closely for updates or patches and plan for rapid deployment once available. 8. Consider deploying host-based intrusion detection systems (HIDS) to alert on suspicious command executions. 9. Educate administrators on the risks and signs of exploitation related to this vulnerability. 10. As a longer-term measure, evaluate alternative solutions or update to newer, secure versions once released.