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CVE-2026-65591

N8n code injection

8.8 HIGHEPSS 0.69%
  1. Published22 Jul 2026

Description

n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

N8n2.30.0 · ≥ 2.0.0 < 2.29.8 · < 1.123.64

Remediation

Fixed in
N8n≥ 2.29.8

References

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Frequently asked

Is CVE-2026-65591 being actively exploited?

CVE-2026-65591 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.69%.

How severe is CVE-2026-65591?

CVE-2026-65591 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 0.69% probability of exploitation.

Which products are affected by CVE-2026-65591?

Affected products include N8n.

How do I fix CVE-2026-65591?

Upgrade affected software to a fixed version, for example N8n 2.29.8 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-65591 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.