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CVE-2026-42233

N8n SQL injection

9.8 CRITICALEPSS 0.53%
  1. Published4 May 2026

Description

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, a flaw in the Oracle Database node's select operation allowed user-controlled input passed into the Limit field via expressions to be interpolated directly into the SQL query without sanitization or parameterization. In workflows where external input is passed into the Limit field (e.g., from a webhook), an attacker could inject arbitrary SQL and exfiltrate data from the connected Oracle database. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.

CVSS 3.1 breakdown

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

Affected products

N8n2.18.0 · ≥ 2.17.0 < 2.17.4 · < 1.123.32

Remediation

Fixed in
N8n≥ 2.17.4

References

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Frequently asked

Is CVE-2026-42233 being actively exploited?

CVE-2026-42233 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.53%.

How severe is CVE-2026-42233?

CVE-2026-42233 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.53% probability of exploitation.

Which products are affected by CVE-2026-42233?

Affected products include N8n.

How do I fix CVE-2026-42233?

Upgrade affected software to a fixed version, for example N8n 2.17.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-42233 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.