Attack Chain

1. The attacker identifies a vulnerable instance of nextlevelbuilder GoClaw or GoClaw Lite running version 3.8.5 or earlier.
2. The attacker crafts a malicious RPC request targeting the vulnerable RPC Handler component.
3. The attacker sends the crafted RPC request to the vulnerable GoClaw/GoClaw Lite instance remotely.
4. Due to the improper authorization, the RPC Handler processes the request without proper authentication or authorization checks.
5. The attacker gains unauthorized access to functions or data within the GoClaw/GoClaw Lite application.
6. The attacker modifies data, executes unauthorized commands, or performs other malicious actions within the application’s scope.
7. The attacker leverages the compromised application to further escalate privileges or gain access to other systems.

Impact

Successful exploitation of CVE-2026-7505 allows an unauthenticated remote attacker to bypass authorization controls in nextlevelbuilder GoClaw and GoClaw Lite. This can lead to unauthorized access to sensitive data, modification of system configurations, or execution of arbitrary commands. While the number of affected installations is unknown, organizations utilizing these products should consider this a high-risk vulnerability due to the availability of exploit code.

Recommendation

• Immediately upgrade nextlevelbuilder GoClaw and GoClaw Lite to version 3.9.0 to apply the security patch (406022e79f4a18b3070a446712080571eff11e30), as mentioned in the overview.
• Monitor network traffic for suspicious RPC requests targeting GoClaw/GoClaw Lite servers using network connection logs.
• Deploy web server access rules to detect and block access to the RPC Handler component from unauthorized IP addresses.
• Review and harden access control lists for the GoClaw/GoClaw Lite application to prevent unauthorized access.