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 — 3 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: 0.5%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100CISA 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
Severity81% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
41st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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 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 rangeFix by version rangeDependents
n8n—
  • every version up to 1.123.67: fixed in 1.123.67
  • 2.32.0 up to 2.32.1: fixed in 2.32.1
  • 2.0.0-rc.0 up to 2.31.5: fixed in 2.31.5
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 78× 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 152 total refreshes for this CVE.

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

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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 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 0.5% probability of exploitation in the next 30 days (41st percentile of EPSS-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?
A fix for CVE-2026-72769 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72769 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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