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CVE-2026-56348

N8n server-side request forgery (SSRF)

9.1 CRITICALEPSS 0.48%
  1. Published22 Jun 2026

Description

n8n before 2.20.0 contains a credential exfiltration vulnerability in the POST /rest/dynamic-node-parameters/options endpoint that allows authenticated users to bypass Allowed HTTP Request Domains restrictions. Attackers with credential access can cause the n8n server to issue HTTP requests with credentials to unauthorized hosts, exfiltrating sensitive authentication data.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

Affected products

N8n< 2.20.0

Remediation

Fixed in
N8n≥ 2.20.0

References

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Frequently asked

Is CVE-2026-56348 being actively exploited?

CVE-2026-56348 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.48%.

How severe is CVE-2026-56348?

CVE-2026-56348 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.48% probability of exploitation.

Which products are affected by CVE-2026-56348?

Affected products include N8n.

How do I fix CVE-2026-56348?

Upgrade affected software to a fixed version, for example N8n 2.20.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-56348 against the real software inventory on every managed device, every day. 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.