CVE-2026-42343
mediumpriority · track · 0EPSS 0.003 · 19 %ileEUEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.7–6.3
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (5)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-42343cnnvd
- https://github.com/labring/FastGPT/releasesPatchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-42343cnnvd
- https://github.com/labring/FastGPT/security/advisories/GHSA-qv7v-r94x-6x3xenisa_euvd
- https://github.com/labring/FastGPT/security/advisories/GHSA-qv7v-r94x-6x3xnvd
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