CVE-2026-72766

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-11. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

n8n before 1.123.67, 2.x before 2.31.5, and 2.32.x before 2.32.1 contain a type confusion vulnerability in the Send Email node, which does not enforce that its message fields are strings. A crafted non-string value supplied from a workflow expression into the text or HTML body field can be interpreted by the underlying mail library (Nodemailer) as a file path or URL, allowing arbitrary local file disclosure and server-side request forgery (SSRF). Exploitation requires a pre-existing active workflow with an unauthenticated webhook, valid SMTP credentials configured on the node, and untrusted input mapped directly into the body field; this is not a default configuration.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA 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
Severity75% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
0.4%
EPSS %ILE
36th
KEV
Not listed

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

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

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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

August 28, 2026

Advisory Details (2)

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

n8n before 1.123.67 Arbitrary File Read via Send Email Node | Advisories | VulnCheck

https://www.vulncheck.com/advisories/n8n-before-arbitrary-file-read-via-send-email-node
github Patch Available

Send Email Node Arbitrary File Read and SSRF via Nodemailer Content-Object Type Confusion · Advisory · n8n-io/n8n · GitHub

https://github.com/n8n-io/n8n/security/advisories/GHSA-2x35-3fw4-9jr4

Vendor Advisories for CVE-2026-72766(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 16× in last 7d / 91× 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 199 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-72766?
CVE-2026-72766 is a high vulnerability published on August 11, 2026. n8n before 1.123.67, 2.x before 2.31.5, and 2.32.x before 2.32.1 contain a type confusion vulnerability in the Send Email node, which does not enforce that its message fields are strings. A crafted non-string value supplied from a workflow expression into the text or HTML body field can be…
When was CVE-2026-72766 disclosed?
CVE-2026-72766 was first published on August 11, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72766 actively exploited?
CVE-2026-72766 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72766?
CVE-2026-72766 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-72766?
A fix for CVE-2026-72766 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72766 are linked in the Vendor Advisories panel on this page.

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