CVE-2026-73483

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 69% 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, secondary
Trending — 3 sources updated this weekElevated
9.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.4Exploit: Elevated riskExposed: 0

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

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
9.4
EG Score
9.4(medium)
EG Risk
73(Attend)
EG Risk 73/100SSVC: 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
Severity94% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

August 13, 2026

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated Aug 13, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

Flowise before 3.1.3 Sandbox Escape via Puppeteer | Advisories | VulnCheck

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

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 57× in last 7d / 65× 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. 2026-08-21 05:58 UTCGHSA enrichment
  2. 2026-08-21 01:34 UTCEG score recompute
  3. 2026-08-21 01:34 UTCGHSA enrichment
  4. 2026-08-20 22:56 UTCEPSS rescore
  5. 2026-08-20 21:11 UTCGHSA enrichment
  6. 2026-08-20 16:48 UTCGHSA enrichment
  7. 2026-08-20 12:07 UTCGHSA enrichment
  8. 2026-08-20 07:43 UTCGHSA enrichment
  9. 2026-08-20 03:20 UTCGHSA enrichment
  10. 2026-08-19 22:54 UTCGHSA enrichment
  11. 2026-08-19 18:31 UTCEG score recompute
  12. 2026-08-19 18:31 UTCGHSA enrichment
  13. 2026-08-19 17:04 UTCEPSS rescore
  14. 2026-08-19 13:13 UTCGHSA enrichment
  15. 2026-08-19 08:49 UTCGHSA enrichment
  16. 2026-08-19 04:26 UTCGHSA enrichment
  17. 2026-08-18 23:58 UTCGHSA enrichment
  18. 2026-08-18 19:36 UTCGHSA enrichment
  19. 2026-08-18 15:13 UTCEG score recompute
  20. 2026-08-18 15:12 UTCGHSA enrichment
  21. 2026-08-18 13:49 UTCEPSS rescore
  22. 2026-08-18 13:49 UTCEPSS rescore
  23. 2026-08-18 10:41 UTCGHSA enrichment
  24. 2026-08-18 06:17 UTCGHSA enrichment
  25. 2026-08-18 01:54 UTCGHSA enrichment
Show 40 more
  1. 2026-08-17 21:29 UTCGHSA enrichment
  2. 2026-08-17 17:06 UTCEG score recompute
  3. 2026-08-17 17:06 UTCGHSA enrichment
  4. 2026-08-17 13:47 UTCEPSS rescore
  5. 2026-08-17 12:42 UTCGHSA enrichment
  6. 2026-08-17 08:19 UTCGHSA enrichment
  7. 2026-08-17 03:56 UTCGHSA enrichment
  8. 2026-08-16 23:33 UTCGHSA enrichment
  9. 2026-08-16 19:10 UTCEG score recompute
  10. 2026-08-16 19:10 UTCGHSA enrichment
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 14:47 UTCGHSA enrichment
  14. 2026-08-16 10:23 UTCGHSA enrichment
  15. 2026-08-16 06:00 UTCEG score recompute
  16. 2026-08-16 06:00 UTCGHSA enrichment
  17. 2026-08-16 02:15 UTCEPSS rescore
  18. 2026-08-16 01:38 UTCGHSA enrichment
  19. 2026-08-15 21:15 UTCGHSA enrichment
  20. 2026-08-15 16:52 UTCGHSA enrichment
  21. 2026-08-15 12:29 UTCGHSA enrichment
  22. 2026-08-15 08:06 UTCGHSA enrichment
  23. 2026-08-15 03:43 UTCEG score recompute
  24. 2026-08-15 03:43 UTCGHSA enrichment
  25. 2026-08-15 01:31 UTCEPSS rescore
  26. 2026-08-14 23:19 UTCEG score recompute
  27. 2026-08-14 23:19 UTCGHSA enrichment
  28. 2026-08-14 22:39 UTCEG score recompute
  29. 2026-08-14 22:39 UTCGHSA enrichment
  30. 2026-08-14 19:19 UTCGHSA enrichment
  31. 2026-08-14 14:52 UTCGHSA enrichment
  32. 2026-08-14 10:29 UTCGHSA enrichment
  33. 2026-08-14 06:06 UTCGHSA enrichment
  34. 2026-08-14 01:43 UTCGHSA enrichment
  35. 2026-08-13 21:20 UTCGHSA enrichment
  36. 2026-08-13 16:57 UTCGHSA enrichment
  37. 2026-08-13 12:34 UTCEG score recompute
  38. 2026-08-13 12:34 UTCGHSA enrichment
  39. 2026-08-13 11:42 UTCEG score recompute
  40. 2026-08-13 11:41 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-73483?
CVE-2026-73483 is a critical 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 in the National Vulnerability Database on August 13, 2026, with the most recent update on August 14, 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% probability of exploitation in the next 30 days, which ranks it in the top 69.2% of all scored CVEs.
What is the CVSS score of CVE-2026-73483?
CVE-2026-73483 has a CVSS v3 base score of 9.4 (NVD).
How do I remediate CVE-2026-73483?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73483, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-73483

Explore →

Is Your Infrastructure Affected by CVE-2026-73483?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs