CVE-2026-72766: 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

Q: How do I fix CVE-2026-72766?

n8n: upgrade to 1.123.67, 2.31.5. Exact commands for each OS are on this page.

Q: Is CVE-2026-72766 being exploited?

CVE-2026-72766 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-72766 affect?

CVE-2026-72766 affects n8n. Severity is high (CVSS 7.5). 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

Q: How urgent is CVE-2026-72766?

Priority 41/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2026-72766 is a high-severity flaw (CVSS 7.5) affecting n8n. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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).

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-843
Published	2026-08-11
Last modified	2026-10-23

Publisher (CNA): VulnCheck · Vendor: n8n

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-11 13:19 UTCPublished CVE record published
2026-10-23 19:10 UTCUpdated Record last modified

n8n n8n UPGRADE

Affected: < 1.123.67 · >= 2.0.0 and < 2.31.5 · 2.32.0

Fixed in: 1.123.67, 2.31.5

Safe to downgrade to: a release before 2.0.0

1. Check installed version

npm ls n8n

2. UPGRADE to 1.123.67

npm install n8n@">=1.123.67"

3. If no update is available yet, DOWNGRADE to a release before 2.0.0

npm view n8n versions npm install n8n@"<2.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

Fedora 46 · clementine · FIXED · 1.4.2-1.fc46 · FEDORA-2026-3e748ef4d3 · source

sudo dnf upgrade --advisory=FEDORA-2026-3e748ef4d3

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-72766?

n8n: upgrade to 1.123.67, 2.31.5. Exact commands for each OS are on this page.

Is CVE-2026-72766 being exploited?

CVE-2026-72766 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-72766 affect?

CVE-2026-72766 affects n8n. Severity is high (CVSS 7.5). 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

How urgent is CVE-2026-72766?

Priority 41/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-77079 HIGH 8.8 UPGRADE n8n before 2.34.1 and 2.33.4 contains an authorization bypass in the custom project role deletion (reassignmen
CVE-2026-72765 CRITICAL 9.9 UPGRADE n8n before 2.31.5 and before 2.32.1 contain a sandbox escape vulnerability in expression evaluation
CVE-2026-72764 HIGH 8.8 UPGRADE n8n's JavaScript task runner shared a single module cache across all users' Code-node executions
CVE-2026-72767 HIGH 8.8 UPGRADE n8n before 1.123.67, 2.x before 2.31.5, and 2.32.x before 2.32.1 contain a remote code execution vulnerability
CVE-2026-72750 HIGH 8.8 UPGRADE n8n before 1.123.67, 2.31.5, and 2.32.1 contains a SQL injection vulnerability in the Snowflake node's Execute

References

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