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.
History

Tue, 12 May 2026 03:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 09 May 2026 01:45:00 +0000

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First Time appeared Labring
Labring fastgpt
Vendors & Products Labring
Labring fastgpt

Fri, 08 May 2026 22:30:00 +0000

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Description 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.
Title FastGPT: Uncontrolled Resource Consumption leading to Sandbox Exhaustion
Weaknesses CWE-400
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-05-08T22:09:03.156Z

Updated: 2026-05-12T02:10:48.249Z

Reserved: 2026-04-26T13:26:14.514Z

Link: CVE-2026-42343

cve-icon Vulnrichment

Updated: 2026-05-12T02:10:42.991Z

cve-icon NVD

Status : Deferred

Published: 2026-05-08T23:16:37.050

Modified: 2026-05-12T16:41:36.477

Link: CVE-2026-42343

cve-icon Redhat

No data.