agentscope-ai AgentScope 1.0.18/1.0.19 RealtimeAgent execute_python_code access control

Summaryinfo

A vulnerability was found in agentscope-ai AgentScope 1.0.18/1.0.19. It has been declared as critical. Affected by this vulnerability is the function execute_python_code of the component RealtimeAgent. Executing a manipulation can lead to access control. This vulnerability is registered as CVE-2026-51856. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in agentscope-ai AgentScope 1.0.18/1.0.19. This vulnerability affects the function execute_python_code of the component RealtimeAgent. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In agentscope 1.0.18, 1.0.19, and 1.0.19 when the RealtimeAgent session exposes execute_python_code as an available tool, a remote WebSocket user can prompt the agent to call that tool and run Python code in the service environment. In the validated path, RealtimeAgent._acting forwards the model-produced tool call to Toolkit.call_tool_function, which invokes execute_python_code without an additional approval or isolation boundary on that path.

The advisory is available at github.com. This vulnerability was named CVE-2026-51856 since 06/08/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/30/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• agentscope-ai

Name

• AgentScope

Version

• 1.0.18
• 1.0.19

Website

• Product: https://github.com/agentscope-ai/agentscope/

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