How severe is CVE-2026-25051?

CVE-2026-25051 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-2026-25051 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25051?

CVE-2026-25051 affects N8n. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25051?

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

Does CVE-2026-25051 have an EU (EUVD) identifier?

Yes. CVE-2026-25051 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5420.

When was CVE-2026-25051 published?

CVE-2026-25051 was published on 2026-02-04 and last updated on 2026-06-17.

CVE-2026-25051

CVE-2026-25051 is a medium-severity vulnerability in N8n with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 8.5
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5420
Weakness: CWE-79
Affected product: N8n
Published: 2026-02-04
Last modified: 2026-06-17

Description

n8n is an open source workflow automation platform. Prior to version 1.123.2, a Cross-Site Scripting (XSS) vulnerability has been identified in the handling of webhook responses and related HTTP endpoints. Under certain conditions, the Content Security Policy (CSP) sandbox protection intended to isolate HTML responses may not be applied correctly. An authenticated user with permission to create or modify workflows could abuse this to execute malicious scripts with same-origin privileges when other users interact with the crafted workflow. This could lead to session hijacking and account takeover. This issue has been patched in version 1.123.2.

Frequently asked questions

What is CVE-2026-25051?: n8n is an open source workflow automation platform. Prior to version 1.123.2, a Cross-Site Scripting (XSS) vulnerability has been identified in the handling of webhook responses and related HTTP endpoints. Under certain conditions, the Content Security Policy (CSP) sandbox protection intended to isolate HTML responses may not be applied correctly. An authenticated user with permission to create or modify workflows could abuse this to execute malicious scripts with same-origin privileges when other users interact with the crafted workflow. This could lead to session hijacking and account takeover. This issue has been patched in version 1.123.2.
How severe is CVE-2026-25051?: CVE-2026-25051 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-2026-25051 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25051?: CVE-2026-25051 affects N8n. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25051?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-25051 have an EU (EUVD) identifier?: Yes. CVE-2026-25051 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5420.
When was CVE-2026-25051 published?: CVE-2026-25051 was published on 2026-02-04 and last updated on 2026-06-17.

References

Affected products (1)

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

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