CVE-2026-72766

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 80% 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 week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: 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.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
8.2
EG Score
8.2(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 14, 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 rangeFixed inDependents
n8n—1.123.67—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 35× in last 7d / 48× 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 06:19 UTCEG score recompute
  2. 2026-08-21 06:19 UTCGHSA enrichment
  3. 2026-08-20 22:56 UTCEPSS rescore
  4. 2026-08-20 19:21 UTCGHSA enrichment
  5. 2026-08-20 08:23 UTCGHSA enrichment
  6. 2026-08-19 21:25 UTCEG score recompute
  7. 2026-08-19 21:25 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 10:12 UTCGHSA enrichment
  10. 2026-08-18 23:09 UTCEG score recompute
  11. 2026-08-18 23:09 UTCGHSA enrichment
  12. 2026-08-18 13:49 UTCEPSS rescore
  13. 2026-08-18 13:49 UTCEPSS rescore
  14. 2026-08-18 12:11 UTCGHSA enrichment
  15. 2026-08-18 01:02 UTCGHSA enrichment
  16. 2026-08-17 14:04 UTCEG score recompute
  17. 2026-08-17 14:04 UTCGHSA enrichment
  18. 2026-08-17 13:47 UTCEPSS rescore
  19. 2026-08-17 03:07 UTCGHSA enrichment
  20. 2026-08-16 16:09 UTCEG score recompute
  21. 2026-08-16 16:09 UTCGHSA enrichment
  22. 2026-08-16 14:56 UTCEPSS rescore
  23. 2026-08-16 14:56 UTCEPSS rescore
  24. 2026-08-16 05:11 UTCEG score recompute
  25. 2026-08-16 05:11 UTCGHSA enrichment
Show 23 more
  1. 2026-08-16 02:15 UTCEPSS rescore
  2. 2026-08-15 18:14 UTCGHSA enrichment
  3. 2026-08-15 07:16 UTCEG score recompute
  4. 2026-08-15 07:16 UTCGHSA enrichment
  5. 2026-08-15 01:31 UTCEPSS rescore
  6. 2026-08-14 20:18 UTCEG score recompute
  7. 2026-08-14 20:18 UTCGHSA enrichment
  8. 2026-08-14 19:54 UTCEG score recompute
  9. 2026-08-14 19:54 UTCGHSA enrichment
  10. 2026-08-14 18:08 UTCGHSA enrichment
  11. 2026-08-14 07:11 UTCEG score recompute
  12. 2026-08-14 07:11 UTCGHSA enrichment
  13. 2026-08-13 22:00 UTCEPSS rescore
  14. 2026-08-13 20:13 UTCGHSA enrichment
  15. 2026-08-13 09:16 UTCGHSA enrichment
  16. 2026-08-12 22:18 UTCEG score recompute
  17. 2026-08-12 22:18 UTCGHSA enrichment
  18. 2026-08-12 13:51 UTCEPSS rescore
  19. 2026-08-12 11:21 UTCGHSA enrichment
  20. 2026-08-12 00:22 UTCGHSA enrichment
  21. 2026-08-11 13:25 UTCEG score recompute
  22. 2026-08-11 12:22 UTCEG score recompute
  23. 2026-08-11 12:22 UTCMITRE cvelistV5first tracked

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 in the National Vulnerability Database on August 11, 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-2026-72766 actively exploited?
CVE-2026-72766 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 79.7% of all scored CVEs.
What is the CVSS score of CVE-2026-72766?
CVE-2026-72766 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-72766?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-72766, 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-2026-72766

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