CVE-2026-42343

The record

FastGPT is an AI Agent building platform. In versions 4.14.13 and prior, the code-sandbox component suffers from insufficient resource isolation and uncontrolled resource consumption. The service relies solely on an application-level soft limit (a 500ms polling interval) for memory management and lacks strict OS-level constraints such as cgroups or kernel-level namespaces. This architectural weakness allows attackers to easily bypass memory checks via time-window attacks, or exhaust the entire JavaScript worker pool via concurrent CPU-intensive requests, resulting in a complete Denial of Service (DoS) for legitimate users. At time of publication, there are no publicly available patches.

Affected packages

Related vulnerabilities

• CVE-2026-113795 pypdf is a free and open-source pure-python PDF library. CWE-400
• CVE-2026-83400 Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise… CWE-400
• CVE-2026-112400 Pillow is a Python imaging library. CWE-400
• CVE-2026-111766 markdown-it is a Markdown parser. CWE-400
• CVE-2026-111759 markdown-it is a Markdown parser. CWE-400
• CVE-2025-52290 A NULL pointer dereference in the avpriv_h264_has_num_reorder_frames function of Ffmpeg… CWE-400
• CVE-2026-111066 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. CWE-400
• CVE-2026-59951 The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context… CWE-400