CVE-2026-72769

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory published 2026-08-11. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the main n8n process (a sandbox escape), leading to a denial of service. Both self-hosted and cloud instances running the VM expression engine are affected.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
37(Track)
EG Risk 37/100SSVC: Track

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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

August 11, 2026

Last Modified

September 18, 2026

Advisory Details (2)

Auto-updated Aug 11, 2026
Patch available. Sources: github.
generic

n8n before 1.123.67 Prototype Pollution via VM Expression Engine | Advisories | VulnCheck

https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-vm-expression-engine
github Patch Available

Prototype Pollution via VM Expression Engine Sandbox Escape Leads to Denial of Service · Advisory · n8n-io/n8n · GitHub

https://github.com/n8n-io/n8n/security/advisories/GHSA-hx4h-vr3m-45vh

Vendor Advisories for CVE-2026-72769(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 rangeFixed inDependents
n8n—2.31.5—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 79× 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 110 total refreshes for this CVE.

  1. 2026-09-19 12:25 UTCEG score recompute
  2. 2026-09-19 12:25 UTCGHSA enrichment
  3. 2026-09-18 19:49 UTCEG score recompute▲ 2.00
  4. 2026-09-18 19:49 UTCGHSA enrichment
  5. 2026-09-18 19:47 UTCNVD updateCVSS v3 → 8.1 · severity → HIGH
  6. 2026-09-18 19:28 UTCEPSS rescore
  7. 2026-09-18 07:07 UTCEG score recompute
  8. 2026-09-18 07:07 UTCGHSA enrichment
  9. 2026-09-17 06:09 UTCEG score recompute
  10. 2026-09-17 06:09 UTCGHSA enrichment
  11. 2026-09-16 14:08 UTCEPSS rescore
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-16 05:07 UTCEG score recompute
  14. 2026-09-16 05:07 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-15 02:55 UTCGHSA enrichment
  17. 2026-09-14 01:56 UTCEG score recompute
  18. 2026-09-14 01:56 UTCGHSA enrichment
  19. 2026-09-13 00:57 UTCEG score recompute
  20. 2026-09-13 00:57 UTCGHSA enrichment
  21. 2026-09-12 15:02 UTCEPSS rescore
  22. 2026-09-11 23:58 UTCEG score recompute
  23. 2026-09-11 23:58 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-10 22:03 UTCEG score recompute
Show 75 more
  1. 2026-09-10 22:03 UTCGHSA enrichment
  2. 2026-09-10 09:35 UTCEPSS rescore
  3. 2026-09-09 21:03 UTCGHSA enrichment
  4. 2026-09-09 05:44 UTCEG score recompute
  5. 2026-09-09 05:44 UTCGHSA enrichment
  6. 2026-09-08 22:01 UTCEPSS rescore
  7. 2026-09-07 17:04 UTCEG score recompute
  8. 2026-09-07 17:04 UTCGHSA enrichment
  9. 2026-09-06 13:48 UTCEPSS rescore
  10. 2026-09-06 05:20 UTCEG score recompute
  11. 2026-09-06 05:20 UTCGHSA enrichment
  12. 2026-09-05 04:18 UTCEG score recompute
  13. 2026-09-05 04:18 UTCGHSA enrichment
  14. 2026-09-04 05:07 UTCEPSS rescore
  15. 2026-09-04 03:18 UTCGHSA enrichment
  16. 2026-09-03 01:29 UTCEG score recompute
  17. 2026-09-03 01:29 UTCGHSA enrichment
  18. 2026-09-02 14:12 UTCEPSS rescore
  19. 2026-09-01 22:55 UTCEG score recompute
  20. 2026-09-01 22:55 UTCGHSA enrichment
  21. 2026-09-01 13:54 UTCEPSS rescore
  22. 2026-09-01 04:40 UTCEPSS rescore
  23. 2026-09-01 04:40 UTCEPSS rescore
  24. 2026-08-31 21:56 UTCEG score recompute
  25. 2026-08-31 21:56 UTCGHSA enrichment
  26. 2026-08-30 19:18 UTCEPSS rescore
  27. 2026-08-30 19:17 UTCEPSS rescore
  28. 2026-08-30 16:16 UTCEG score recompute
  29. 2026-08-30 16:16 UTCGHSA enrichment
  30. 2026-08-30 01:22 UTCEPSS rescore
  31. 2026-08-29 15:17 UTCEG score recompute
  32. 2026-08-29 15:17 UTCGHSA enrichment
  33. 2026-08-28 21:42 UTCEPSS rescore
  34. 2026-08-28 11:13 UTCEG score recompute
  35. 2026-08-28 11:13 UTCGHSA enrichment
  36. 2026-08-27 14:25 UTCEPSS rescore
  37. 2026-08-27 07:27 UTCEG score recompute
  38. 2026-08-27 07:27 UTCGHSA enrichment
  39. 2026-08-26 14:47 UTCEPSS rescore
  40. 2026-08-26 05:27 UTCEG score recompute
  41. 2026-08-26 05:26 UTCGHSA enrichment
  42. 2026-08-25 13:49 UTCEPSS rescore
  43. 2026-08-25 04:27 UTCEG score recompute
  44. 2026-08-25 04:27 UTCGHSA enrichment
  45. 2026-08-24 03:29 UTCGHSA enrichment
  46. 2026-08-23 02:30 UTCEG score recompute
  47. 2026-08-23 02:30 UTCGHSA enrichment
  48. 2026-08-23 00:19 UTCEPSS rescore
  49. 2026-08-22 01:32 UTCEG score recompute
  50. 2026-08-22 01:32 UTCGHSA enrichment
  51. 2026-08-21 23:49 UTCEPSS rescore
  52. 2026-08-21 00:34 UTCEG score recompute
  53. 2026-08-21 00:33 UTCGHSA enrichment
  54. 2026-08-20 22:56 UTCEPSS rescore
  55. 2026-08-19 23:35 UTCEG score recompute
  56. 2026-08-19 23:34 UTCGHSA enrichment
  57. 2026-08-19 17:04 UTCEPSS rescore
  58. 2026-08-18 22:35 UTCEG score recompute
  59. 2026-08-18 22:34 UTCGHSA enrichment
  60. 2026-08-18 13:49 UTCEPSS rescore
  61. 2026-08-18 13:49 UTCEPSS rescore
  62. 2026-08-17 21:36 UTCEG score recompute
  63. 2026-08-17 21:36 UTCGHSA enrichment
  64. 2026-08-17 13:47 UTCEPSS rescore
  65. 2026-08-16 20:36 UTCEG score recompute
  66. 2026-08-16 20:36 UTCGHSA enrichment
  67. 2026-08-16 14:56 UTCEPSS rescore
  68. 2026-08-16 14:56 UTCEPSS rescore
  69. 2026-08-16 02:15 UTCEPSS rescore
  70. 2026-08-15 19:38 UTCEG score recompute
  71. 2026-08-15 19:38 UTCGHSA enrichment
  72. 2026-08-15 01:31 UTCEPSS rescore
  73. 2026-08-14 18:39 UTCEG score recompute
  74. 2026-08-14 18:39 UTCGHSA enrichment
  75. 2026-08-13 22:00 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-72769?
CVE-2026-72769 is a high vulnerability published on August 11, 2026. n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the…
When was CVE-2026-72769 disclosed?
CVE-2026-72769 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72769 actively exploited?
CVE-2026-72769 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 82.8% of all scored CVEs.
What is the CVSS score of CVE-2026-72769?
CVE-2026-72769 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-72769?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72769, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-72769

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