How severe is CVE-2026-56351?

CVE-2026-56351 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-56351 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-56351?

CVE-2026-56351 affects N8n. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-56351?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-56351 have an EU (EUVD) identifier?

Yes. CVE-2026-56351 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38753.

When was CVE-2026-56351 published?

CVE-2026-56351 was published on 2026-06-24 and last updated on 2026-06-26.

CVE-2026-56351

CVE-2026-56351 is a high-severity vulnerability in N8n with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: High (CVSS 3.x base score 8.2)
CVSS v4: 5.3
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38753
Weakness: CWE-89
Affected product: N8n
Published: 2026-06-24
Last modified: 2026-06-26

Description

n8n before version 2.4.0 contains a sql injection vulnerability in MySQL, PostgreSQL, and Microsoft SQL nodes that allows authenticated users to inject arbitrary SQL through unescaped identifier values in node configuration parameters. Attackers with workflow creation permissions can supply specially crafted table or column names to execute unauthorized database commands and compromise data integrity.

Frequently asked questions

What is CVE-2026-56351?: n8n before version 2.4.0 contains a sql injection vulnerability in MySQL, PostgreSQL, and Microsoft SQL nodes that allows authenticated users to inject arbitrary SQL through unescaped identifier values in node configuration parameters. Attackers with workflow creation permissions can supply specially crafted table or column names to execute unauthorized database commands and compromise data integrity.
How severe is CVE-2026-56351?: CVE-2026-56351 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-56351 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-56351?: CVE-2026-56351 affects N8n. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-56351?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-56351 have an EU (EUVD) identifier?: Yes. CVE-2026-56351 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38753.
When was CVE-2026-56351 published?: CVE-2026-56351 was published on 2026-06-24 and last updated on 2026-06-26.

References

Affected products (1)

cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*

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