CVE-2026-44287 Details
Description
FastGPT is an AI Agent building platform. Prior to 4.15.0-beta1, the JavaScript sandbox worker at projects/code-sandbox/src/pool/worker.ts:356 blocks dynamic import() with the regex /\bimport\s*\(/.test(code). JavaScript syntax accepts a block comment between import and (; the regex matches only ASCII whitespace, and the bytes /, *, *, / are not in the \s character class. The payload import/**/("child_process") parses as a syntactically valid dynamic import that the regex does not detect. Because import() is not wrapped by the safeRequire Proxy (which only proxies require), the attacker loads child_process and calls execSync - arbitrary command execution as uid=100(sandbox) inside the sandbox container. This vulnerability is fixed in 4.15.0-beta1.
A vulnerability exists in the FastGPT AI agent building platform in versions prior to 4.15.0-beta1. The issue arises in the JavaScript sandbox worker, where a regex check intended to block dynamic imports is bypassed. This allows an attacker to use a block comment to evade the regex and execute arbitrary commands by importing the 'child_process' module. The vulnerability is present in the 'codex-sandbox' package.
Users can update to FastGPT version 4.15.0-beta1 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 29, 2026CISA-ADP
Assessed Jun 1, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/labring/FastGPT/security/advisories/GHSA-f5mq-qxm4-5mvc | CISA-ADP | AdvisoryExploitRemedyTechnical AnalysisVendor |
| https://github.com/labring/FastGPT/security/advisories/GHSA-f5mq-qxm4-5mvc | [email protected] | AdvisoryExploitRemedyTechnical AnalysisVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-184 | Incomplete List of Disallowed Inputs | [email protected] |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| labring FastGPT | <= 4.15.0-beta1 (semver) |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 1, 2026 | CVE Modified | CISA-ADP |
| May 29, 2026 | New CVE Received | [email protected] |