CVE-2026-42302

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.7%, top 49% 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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: Elevated riskExposed: 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. From version 4.14.10 to before version 4.14.13, the agent-sandbox component of FastGPT is vulnerable to unauthenticated Remote Code Execution (RCE). The startup script entrypoint.sh initializes code-server with the --auth none flag and binds the service to all network interfaces (0.0.0.0:8080). This configuration allows any user with network access to the port to bypass authentication and gain full control over the sandbox environment. This issue has been patched in version 4.14.13.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
52%
KEV
Not listed

Published

May 8, 2026

Last Modified

July 24, 2026

Advisory Details (4)

Auto-updated Sep 12, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github_release, github.
github Patch Available🟡 PoC Available

Unauthenticated Remote Code Execution (RCE) via code-server Misconfiguration in agent-sandbox · Advisory · labring/FastGPT · GitHub

https://github.com/labring/FastGPT/security/advisories/GHSA-34rc-438g-7w78
github_release Patch Available

v4.14.13

Patch available: labring/FastGPT v4.14.13

https://github.com/labring/FastGPT/releases/tag/v4.14.13
github_pr

fix(sandbox): fix unauthenticated RCE via agent-sandbox

Fix merged in labring/FastGPT PR #6781 on 2026-04-20 — awaiting tagged release

https://github.com/labring/FastGPT/pull/6781
github_commit

commit 9d1cafce9241 (labring/FastGPT)

Fix landed in labring/FastGPT commit 9d1cafce9241 — awaiting tagged release

https://github.com/labring/FastGPT/commit/9d1cafce9241430fb5bcdd646455055c5f4ae0a4

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 26× 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.

Showing the most recent 100 of 149 total refreshes for this CVE.

  1. 2026-09-12 15:01 UTCEPSS rescore
  2. 2026-09-11 14:53 UTCEPSS rescore
  3. 2026-09-11 13:53 UTCOSV refresh
  4. 2026-09-11 09:37 UTCEPSS rescore
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  25. 2026-08-17 11:28 UTCEG score recompute
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  1. 2026-08-16 14:56 UTCEPSS rescore
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  24. 2026-08-03 19:29 UTCEG score recompute
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  39. 2026-07-23 03:11 UTCEG score recompute
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  45. 2026-07-18 10:04 UTCEPSS rescore
  46. 2026-07-16 17:03 UTCEPSS rescore
  47. 2026-07-16 09:53 UTCOSV refresh
  48. 2026-07-15 16:57 UTCEPSS rescore
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  67. 2026-06-28 04:56 UTCEPSS rescore
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  74. 2026-06-22 14:25 UTCEPSS rescore
  75. 2026-06-21 14:56 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-42302?
CVE-2026-42302 is a critical vulnerability published on May 8, 2026. FastGPT is an AI Agent building platform. From version 4.14.10 to before version 4.14.13, the agent-sandbox component of FastGPT is vulnerable to unauthenticated Remote Code Execution (RCE). The startup script entrypoint.sh initializes code-server with the --auth none flag and binds the service to…
When was CVE-2026-42302 disclosed?
CVE-2026-42302 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42302 actively exploited?
CVE-2026-42302 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 48.1% of all scored CVEs.
What is the CVSS score of CVE-2026-42302?
CVE-2026-42302 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-42302?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42302, 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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