CVE-2026-46442

CRITICALNVD 9.99.9—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.9 under NVD CVSS v3. EPSS exploit probability: 36.3%, top 2% 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
9.9EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 3.4%CVSS: 9.9Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, POST /api/v1/node-custom-function lacks route-level authorization, allowing any authenticated user or API key to submit arbitrary JavaScript to the Custom JS Function node. When E2B_APIKEY is not configured — the common deployment case — Flowise executes this code inside a NodeVM sandbox. This sandbox can be escaped, allowing an attacker to reach the host process object and execute system commands via child_process. The result is authenticated remote code execution on the Flowise server host. This issue has been patched in version 3.1.2.

CVSS v3
9.9
EG Score
9.9CRITICALmedium confidence
EG Risk
61
EG Risk 61/100

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
Severity99% × 45%
Exploitation40% × 40%
Automatability0% × 15%
EPSS PROB
3.4%
EPSS %ILE
88th
KEV
Not listed

Published

June 8, 2026

Last Modified

July 23, 2026

Advisory Details (2)

Auto-updated Oct 1, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github.
github Patch Available🟡 PoC Available

Authenticated Host RCE via POST /api/v1/node-custom-function and NodeVM Sandbox Escape · Advisory · FlowiseAI/Flowise · GitHub

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9rvc-vf7m-pgm2
github_release Patch Available

[email protected]

Patch available: FlowiseAI/Flowise [email protected]

https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.2

Vendor Advisories for CVE-2026-46442(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFix by version rangeDependents
flowise—
  • every version up to 3.1.2: fixed in 3.1.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 20× 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 142 total refreshes for this CVE.

  1. 2026-10-03 18:51 UTCOSV refresh
  2. 2026-10-03 14:25 UTCEPSS rescore
  3. 2026-10-01 19:50 UTCEPSS rescore
  4. 2026-09-30 15:03 UTCEPSS rescore
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  9. 2026-09-23 17:53 UTCEPSS rescore
  10. 2026-09-18 19:28 UTCEPSS rescore
  11. 2026-09-17 19:31 UTCEPSS rescore
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-14 04:53 UTCEG score recompute
  15. 2026-09-12 15:01 UTCEPSS rescore
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  17. 2026-09-11 09:37 UTCEPSS rescore
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  22. 2026-09-02 14:12 UTCEPSS rescore
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  24. 2026-08-31 01:57 UTCEG score recompute
  25. 2026-08-30 19:17 UTCEPSS rescore
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  1. 2026-08-30 01:22 UTCEPSS rescore
  2. 2026-08-28 21:41 UTCEPSS rescore
  3. 2026-08-26 14:46 UTCEPSS rescore
  4. 2026-08-25 13:49 UTCEPSS rescore
  5. 2026-08-25 01:32 UTCEG score recompute
  6. 2026-08-23 11:52 UTCEG score recompute
  7. 2026-08-23 00:19 UTCEPSS rescore
  8. 2026-08-22 00:05 UTCEG score recompute
  9. 2026-08-21 23:49 UTCEPSS rescore
  10. 2026-08-21 01:37 UTCEG score recompute
  11. 2026-08-20 22:55 UTCEPSS rescore
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  13. 2026-08-19 17:04 UTCEPSS rescore
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  18. 2026-08-16 14:56 UTCEPSS rescore
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  20. 2026-08-16 02:14 UTCEPSS rescore
  21. 2026-08-15 02:47 UTCEG score recompute
  22. 2026-08-15 01:30 UTCEPSS rescore
  23. 2026-08-13 22:28 UTCEG score recompute
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-12 17:09 UTCEG score recompute
  26. 2026-08-12 13:51 UTCEPSS rescore
  27. 2026-08-11 17:58 UTCEG score recompute
  28. 2026-08-11 01:26 UTCEG score recompute
  29. 2026-08-11 00:00 UTCEPSS rescore
  30. 2026-08-09 17:33 UTCEG score recompute
  31. 2026-08-09 13:46 UTCEPSS rescore
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  35. 2026-08-06 16:30 UTCEG score recompute
  36. 2026-08-06 13:47 UTCEPSS rescore
  37. 2026-08-05 20:16 UTCEG score recompute
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  39. 2026-08-04 16:22 UTCEG score recompute
  40. 2026-08-04 15:10 UTCEPSS rescore
  41. 2026-08-04 10:39 UTCEPSS rescore
  42. 2026-08-03 15:21 UTCEG score recompute
  43. 2026-08-03 10:36 UTCEPSS rescore
  44. 2026-08-02 03:02 UTCEG score recompute
  45. 2026-08-02 02:27 UTCEPSS rescore
  46. 2026-08-01 10:50 UTCEG score recompute
  47. 2026-08-01 04:16 UTCEPSS rescore
  48. 2026-07-31 04:55 UTCEG score recompute
  49. 2026-07-30 16:28 UTCEPSS rescore
  50. 2026-07-30 01:30 UTCEPSS rescore
  51. 2026-07-29 06:27 UTCEG score recompute
  52. 2026-07-28 15:36 UTCEPSS rescore
  53. 2026-07-27 18:32 UTCEG score recompute
  54. 2026-07-27 14:13 UTCEPSS rescore
  55. 2026-07-26 21:42 UTCEG score recompute
  56. 2026-07-26 14:54 UTCEPSS rescore
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  58. 2026-07-26 07:13 UTCEG score recompute
  59. 2026-07-25 14:18 UTCEPSS rescore
  60. 2026-07-24 14:17 UTCEPSS rescore
  61. 2026-07-23 14:18 UTCEPSS rescore
  62. 2026-07-23 03:17 UTCEG score recompute
  63. 2026-07-22 14:08 UTCEPSS rescore
  64. 2026-07-21 15:24 UTCEPSS rescore
  65. 2026-07-20 17:08 UTCEPSS rescore
  66. 2026-07-19 14:31 UTCEPSS rescore
  67. 2026-07-19 02:29 UTCEPSS rescore
  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-16 17:03 UTCEPSS rescore
  70. 2026-07-15 16:57 UTCEPSS rescore
  71. 2026-07-15 02:00 UTCEPSS rescore
  72. 2026-07-13 22:30 UTCEPSS rescore
  73. 2026-07-13 06:13 UTCEPSS rescore
  74. 2026-07-12 05:46 UTCEPSS rescore
  75. 2026-07-11 08:27 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2026/CVE-2026-46442.yaml
    First seen Jan 1, 2026

    Flowise < 3.1.2 - node-custom-function Unauthorized RCE

    Open source ↗

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-46442?
CVE-2026-46442 is a critical vulnerability published on June 8, 2026. Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.1.2, POST /api/v1/node-custom-function lacks route-level authorization, allowing any authenticated user or API key to submit arbitrary JavaScript to the Custom JS Function node. When…
When was CVE-2026-46442 disclosed?
CVE-2026-46442 was first published on June 8, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46442 actively exploited?
CVE-2026-46442 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.4% probability of exploitation in the next 30 days (88th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-46442?
CVE-2026-46442 has a CVSS v3 base score of 9.9 (NVD).
How do I remediate CVE-2026-46442?
A fix for CVE-2026-46442 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-46442 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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