CVE-2026-72765: n8n before 2.31.5 and before 2.32.1 contain a sandbox escape vulnerability in expression evaluation

Q: How do I fix CVE-2026-72765?

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

Q: Is CVE-2026-72765 being exploited?

CVE-2026-72765 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-2026-72765 affect?

CVE-2026-72765 affects n8n. Severity is critical (CVSS 9.9). n8n before 2.31.5 and before 2.32.1 contain a sandbox escape vulnerability in expression evaluation. An authenticated user with permission to create or modify workflows can craft expressions using arrow-function bodies to bypass the express

Q: How urgent is CVE-2026-72765?

Priority 49/100. Critical severity

This month

CRITICAL 9.9UPGRADE

CVE-2026-72765 is a critical-severity flaw (CVSS 9.9) affecting n8n. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

n8n before 2.31.5 and before 2.32.1 contain a sandbox escape vulnerability in expression evaluation. An authenticated user with permission to create or modify workflows can craft expressions using arrow-function bodies to bypass the expression sandbox, triggering system command execution on the host running n8n. The issue is fixed in versions 2.31.5 and 2.32.1.

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-94
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: >= 2.31.0 and < 2.31.5 · 2.32.0

Fixed in: 2.31.5

Safe to downgrade to: a release before 2.31.0

1. Check installed version

npm ls n8n

2. UPGRADE to 2.31.5

npm install n8n@">=2.31.5"

3. If no update is available yet, DOWNGRADE to a release before 2.31.0

npm view n8n versions npm install n8n@"<2.31.0"

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 · diffoscope · FIXED · 335-1.fc46 · FEDORA-2026-e4c4cc0856 · source

sudo dnf upgrade --advisory=FEDORA-2026-e4c4cc0856

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-2026-72765?

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

Is CVE-2026-72765 being exploited?

CVE-2026-72765 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-2026-72765 affect?

CVE-2026-72765 affects n8n. Severity is critical (CVSS 9.9). n8n before 2.31.5 and before 2.32.1 contain a sandbox escape vulnerability in expression evaluation. An authenticated user with permission to create or modify workflows can craft expressions using arrow-function bodies to bypass the express

How urgent is CVE-2026-72765?

Priority 49/100. Critical severity

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References

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