labring FastGPT up to 4.9.10 Python permission assignment

Summaryinfo

A vulnerability categorized as critical has been discovered in labring FastGPT up to 4.9.10. This affects an unknown function of the component Python Module. Executing a manipulation can lead to permission assignment. The identification of this vulnerability is CVE-2025-49131. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in labring FastGPT up to 4.9.10. It has been declared as critical. This vulnerability affects an unknown functionality of the component Python Module. The manipulation with an unknown input leads to a permission assignment vulnerability. The CWE definition for the vulnerability is CWE-732. The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

FastGPT is an open-source project that provides a platform for building, deploying, and operating AI-driven workflows and conversational agents. The Sandbox container (fastgpt-sandbox) is a specialized, isolated environment used by FastGPT to safely execute user-submitted or dynamically generated code in isolation. The sandbox before version 4.9.11 has insufficient isolation and inadequate restrictions on code execution by allowing overly permissive syscalls, which allows attackers to escape the intended sandbox boundaries. Attackers could exploit this to read and overwrite arbitrary files and bypass Python module import restrictions. This is patched in version 4.9.11 by restricting the allowed system calls to a safer subset and additional descriptive error messaging.

The advisory is shared for download at github.com. This vulnerability was named CVE-2025-49131 since 06/02/2025. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 4.9.11 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch bb810a43a1c70683fab7f5fe993771e930a94426 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-17467). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• labring

Name

• FastGPT

Version

• 4.9.0
• 4.9.1
• 4.9.2
• 4.9.3
• 4.9.4
• 4.9.5
• 4.9.6
• 4.9.7
• 4.9.8
• 4.9.9
• 4.9.10

License

• open-source

Website

• Product: https://github.com/labring/FastGPT/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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