CVE-2026-44287

MEDIUMNVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 85% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
6.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.3Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.3
EG Score
6.3(medium)
EPSS
14.9%
KEV
Not listed

Published

May 29, 2026

Last Modified

June 1, 2026

Advisory Details (1)

Auto-updated Jun 13, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

sandbox escape to RCE - code-sandbox regex /\bimport\s*\(/ is bypassable · Advisory · labring/FastGPT · GitHub

https://github.com/labring/FastGPT/security/advisories/GHSA-f5mq-qxm4-5mvc

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 47× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-16 17:03 UTCEPSS rescore
  2. 2026-07-16 01:50 UTCEG score recompute
  3. 2026-07-15 16:57 UTCEPSS rescore
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  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 04:56 UTCEPSS rescore
  3. 2026-06-27 17:59 UTCEG score recompute
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  5. 2026-06-26 17:03 UTCEG score recompute
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  7. 2026-06-25 13:49 UTCEPSS rescore
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  18. 2026-06-18 22:24 UTCEG score recompute
  19. 2026-06-18 17:52 UTCEPSS rescore
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  22. 2026-06-17 17:41 UTCEG score recompute
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  24. 2026-06-16 15:06 UTCEG score recompute
  25. 2026-06-15 17:49 UTCEPSS rescore
  26. 2026-06-15 13:47 UTCEG score recompute
  27. 2026-06-14 12:51 UTCEG score recompute
  28. 2026-06-13 23:00 UTCEPSS rescore
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  30. 2026-06-12 23:12 UTCEPSS rescore
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  32. 2026-06-12 10:58 UTCEG score recompute
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  35. 2026-06-10 22:18 UTCEPSS rescore
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  38. 2026-06-10 09:06 UTCEG score recompute
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  40. 2026-06-08 14:17 UTCEPSS rescore
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  53. 2026-06-04 13:12 UTCEPSS rescore
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  55. 2026-06-04 03:31 UTCEG score recompute
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  58. 2026-06-01 13:52 UTCEPSS rescore
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  61. 2026-05-31 22:30 UTCEPSS rescore
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  64. 2026-05-31 00:16 UTCEPSS rescore
  65. 2026-05-29 20:06 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-44287?
CVE-2026-44287 is a medium vulnerability published on May 29, 2026. 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…
When was CVE-2026-44287 disclosed?
CVE-2026-44287 was first published in the National Vulnerability Database on May 29, 2026, with the most recent update on June 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44287 actively exploited?
CVE-2026-44287 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44287?
CVE-2026-44287 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-44287?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44287, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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