How severe is CVE-2026-56359?

CVE-2026-56359 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-56359 being actively exploited?

It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.

What products are affected by CVE-2026-56359?

CVE-2026-56359 affects N8n. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-56359?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2026-56359 published?

CVE-2026-56359 was published on 2026-07-08.

CVE-2026-56359

CVE-2026-56359 is a medium-severity vulnerability in N8n with a CVSS 3.x base score of 5.4. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 4.8
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: N8n
Published: 2026-07-08
Last modified: 2026-07-08

Description

n8n before 2.8.0 contains a cross-site scripting vulnerability in the credential management flow where authenticated users can inject malicious JavaScript URLs into OAuth2 credential Authorization URL fields. Attackers can craft malicious credentials and trick victims into clicking the OAuth authorization button, executing arbitrary scripts in their browser session with the victim's privileges.

Frequently asked questions

What is CVE-2026-56359?: n8n before 2.8.0 contains a cross-site scripting vulnerability in the credential management flow where authenticated users can inject malicious JavaScript URLs into OAuth2 credential Authorization URL fields. Attackers can craft malicious credentials and trick victims into clicking the OAuth authorization button, executing arbitrary scripts in their browser session with the victim's privileges.
How severe is CVE-2026-56359?: CVE-2026-56359 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-56359 being actively exploited?: It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.
What products are affected by CVE-2026-56359?: CVE-2026-56359 affects N8n. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-56359?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-56359 published?: CVE-2026-56359 was published on 2026-07-08.

References

Affected products (1)

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

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