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Vulnerability record · CVE-2025-49131 · published 9 June 2025

CVE-2025-49131: Fastgpt incorrect permission assignment vulnerability

Fastgpt · Fastgpt

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.

9.9 CVSS 3.1 Critical EPSS 0.45% · top 63.3% CWE-732 · Incorrect permission assignment
9.9CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/labring/FastGPT/commit/bb810a43a1c70683fab7f5fe993771e930a94426 Patch
https://github.com/labring/FastGPT/pkgs/container/fastgpt-sandbox Product
https://github.com/labring/FastGPT/pull/4958 Issue Tracking
https://github.com/labring/FastGPT/releases/tag/v4.9.11 Release Notes
https://github.com/labring/FastGPT/security/advisories/GHSA-f3pf-r3g7-g895 Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-49131), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.