CVE-2026-73483

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-13. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 8.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Flowise (packages flowise and flowise-components) in versions <= 3.1.2 contain a sandbox escape in the vm2/@flowiseai/nodevm JavaScript sandbox. An authenticated user with access to the /api/v1/node-custom-function endpoint can escape the sandbox by supplying attacker-controlled executablePath and args parameters to puppeteer.launch(), which internally invokes child_process.spawn() outside the sandbox boundary. This allows execution of arbitrary OS commands as the Flowise process user (root in the official Docker image) and arbitrary host file disclosure via Chromium's file:// URL handling. In versions 3.0.8–3.1.2 exploitation requires ALLOW_BUILTIN_DEP=true; earlier versions are exploitable by default. Fixed in 3.1.3.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
71
EG Risk 71/100CISA SSVC

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
Severity88% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
53rd
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 13, 2026

Last Modified

September 3, 2026

Advisory Details (2)

Auto-updated Aug 31, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium · Advisory · FlowiseAI/Flowise · GitHub

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g
generic

Flowise before 3.1.3 Sandbox Escape via Puppeteer | Advisories | VulnCheck

https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteer

Vendor Advisories for CVE-2026-73483(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 19× in last 7d / 95× 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 257 total refreshes for this CVE.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 22:25 UTCGHSA enrichment
  3. 2026-10-04 07:29 UTCGHSA enrichment
  4. 2026-10-03 19:53 UTCEG score recompute
  5. 2026-10-03 19:53 UTCGHSA enrichment
  6. 2026-10-03 14:26 UTCEPSS rescore
  7. 2026-10-02 19:41 UTCEG score recompute
  8. 2026-10-02 19:41 UTCGHSA enrichment
  9. 2026-10-02 08:06 UTCEG score recompute
  10. 2026-10-02 08:06 UTCGHSA enrichment
  11. 2026-10-01 19:50 UTCEPSS rescore
  12. 2026-10-01 09:28 UTCGHSA enrichment
  13. 2026-09-30 21:51 UTCEG score recompute
  14. 2026-09-30 21:51 UTCGHSA enrichment
  15. 2026-09-29 15:24 UTCEPSS rescore
  16. 2026-09-29 04:16 UTCEG score recompute
  17. 2026-09-29 04:16 UTCGHSA enrichment
  18. 2026-09-28 13:52 UTCEPSS rescore
  19. 2026-09-28 12:41 UTCGHSA enrichment
  20. 2026-09-28 01:06 UTCEG score recompute
  21. 2026-09-28 01:06 UTCGHSA enrichment
  22. 2026-09-27 13:48 UTCEPSS rescore
  23. 2026-09-27 09:49 UTCEG score recompute
  24. 2026-09-27 09:49 UTCGHSA enrichment
  25. 2026-09-26 15:59 UTCEPSS rescore
Show 75 more
  1. 2026-09-25 03:37 UTCEG score recompute
  2. 2026-09-25 03:37 UTCGHSA enrichment
  3. 2026-09-24 08:27 UTCGHSA enrichment
  4. 2026-09-23 20:52 UTCEG score recompute
  5. 2026-09-23 20:52 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-23 09:08 UTCGHSA enrichment
  8. 2026-09-22 21:31 UTCEG score recompute
  9. 2026-09-22 21:31 UTCGHSA enrichment
  10. 2026-09-22 09:57 UTCGHSA enrichment
  11. 2026-09-21 22:04 UTCEG score recompute
  12. 2026-09-21 22:04 UTCGHSA enrichment
  13. 2026-09-21 21:09 UTCEPSS rescore
  14. 2026-09-21 10:28 UTCGHSA enrichment
  15. 2026-09-20 22:54 UTCEG score recompute
  16. 2026-09-20 22:54 UTCGHSA enrichment
  17. 2026-09-20 20:16 UTCEPSS rescore
  18. 2026-09-20 11:18 UTCGHSA enrichment
  19. 2026-09-19 23:43 UTCEG score recompute
  20. 2026-09-19 23:43 UTCGHSA enrichment
  21. 2026-09-19 12:08 UTCGHSA enrichment
  22. 2026-09-19 00:33 UTCEG score recompute
  23. 2026-09-19 00:33 UTCGHSA enrichment
  24. 2026-09-18 19:28 UTCEPSS rescore
  25. 2026-09-18 12:52 UTCGHSA enrichment
  26. 2026-09-18 00:30 UTCEG score recompute
  27. 2026-09-18 00:30 UTCGHSA enrichment
  28. 2026-09-17 12:14 UTCGHSA enrichment
  29. 2026-09-17 00:20 UTCEG score recompute
  30. 2026-09-17 00:20 UTCGHSA enrichment
  31. 2026-09-16 14:08 UTCEPSS rescore
  32. 2026-09-16 12:45 UTCEG score recompute
  33. 2026-09-16 12:45 UTCGHSA enrichment
  34. 2026-09-16 05:15 UTCEPSS rescore
  35. 2026-09-16 01:10 UTCGHSA enrichment
  36. 2026-09-15 13:19 UTCEG score recompute
  37. 2026-09-15 13:19 UTCGHSA enrichment
  38. 2026-09-15 03:12 UTCEPSS rescore
  39. 2026-09-15 01:44 UTCGHSA enrichment
  40. 2026-09-14 14:09 UTCGHSA enrichment
  41. 2026-09-14 02:34 UTCEG score recompute
  42. 2026-09-14 02:34 UTCGHSA enrichment
  43. 2026-09-13 14:59 UTCGHSA enrichment
  44. 2026-09-13 03:03 UTCGHSA enrichment
  45. 2026-09-12 15:28 UTCEG score recompute
  46. 2026-09-12 15:28 UTCGHSA enrichment
  47. 2026-09-12 15:02 UTCEPSS rescore
  48. 2026-09-12 03:53 UTCGHSA enrichment
  49. 2026-09-11 16:17 UTCEG score recompute
  50. 2026-09-11 16:17 UTCGHSA enrichment
  51. 2026-09-11 14:53 UTCEPSS rescore
  52. 2026-09-11 04:34 UTCGHSA enrichment
  53. 2026-09-10 16:59 UTCEG score recompute
  54. 2026-09-10 16:59 UTCGHSA enrichment
  55. 2026-09-10 09:35 UTCEPSS rescore
  56. 2026-09-10 05:24 UTCGHSA enrichment
  57. 2026-09-09 17:48 UTCGHSA enrichment
  58. 2026-09-09 05:07 UTCEG score recompute
  59. 2026-09-09 05:07 UTCGHSA enrichment
  60. 2026-09-08 22:01 UTCEPSS rescore
  61. 2026-09-08 04:13 UTCGHSA enrichment
  62. 2026-09-07 16:38 UTCEG score recompute
  63. 2026-09-07 16:38 UTCGHSA enrichment
  64. 2026-09-06 23:44 UTCEG score recompute
  65. 2026-09-06 23:44 UTCGHSA enrichment
  66. 2026-09-06 13:48 UTCEPSS rescore
  67. 2026-09-06 12:03 UTCGHSA enrichment
  68. 2026-09-06 00:28 UTCEG score recompute
  69. 2026-09-06 00:28 UTCGHSA enrichment
  70. 2026-09-05 12:53 UTCGHSA enrichment
  71. 2026-09-05 00:37 UTCEG score recompute
  72. 2026-09-05 00:37 UTCGHSA enrichment
  73. 2026-09-04 07:52 UTCEG score recompute
  74. 2026-09-04 07:52 UTCGHSA enrichment
  75. 2026-09-04 05:07 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-73483?
CVE-2026-73483 is a high vulnerability published on August 13, 2026. Flowise (packages flowise and flowise-components) in versions <= 3.1.2 contain a sandbox escape in the vm2/@flowiseai/nodevm JavaScript sandbox. An authenticated user with access to the /api/v1/node-custom-function endpoint can escape the sandbox by supplying attacker-controlled executablePath and…
When was CVE-2026-73483 disclosed?
CVE-2026-73483 was first published on August 13, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73483 actively exploited?
CVE-2026-73483 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (53rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-73483?
CVE-2026-73483 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-73483?
A fix for CVE-2026-73483 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-73483 are linked in the Vendor Advisories panel on this page.

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