How severe is CVE-2026-54306?

CVE-2026-54306 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-54306 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-54306?

CVE-2026-54306 affects N8n. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-54306?

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

Does CVE-2026-54306 have an EU (EUVD) identifier?

Yes. CVE-2026-54306 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38474.

When was CVE-2026-54306 published?

CVE-2026-54306 was published on 2026-06-23 and last updated on 2026-06-26.

CVE-2026-54306

CVE-2026-54306 is a medium-severity vulnerability in N8n with a CVSS 3.x base score of 6.4. 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-1321.

Key facts

Severity: Medium (CVSS 3.x base score 6.4)
CVSS v4: 6.3
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38474
Weakness: CWE-1321
Affected product: N8n
Published: 2026-06-23
Last modified: 2026-06-26

Description

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, a prototype pollution vulnerability allowed a crafted public webhook payload to inject attacker-controlled fields into workflow data during internal object copying. These fields could be surfaced and consumed as normal values by downstream built-in nodes. Where a workflow combines a public webhook with action nodes that consume the resulting fields, an attacker could cause the workflow to act as a confused deputy — targeting unintended records or issuing outbound requests using the workflow owner's configured credentials. This vulnerability is fixed in 2.25.7 and 2.26.2.

Frequently asked questions

What is CVE-2026-54306?: n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, a prototype pollution vulnerability allowed a crafted public webhook payload to inject attacker-controlled fields into workflow data during internal object copying. These fields could be surfaced and consumed as normal values by downstream built-in nodes. Where a workflow combines a public webhook with action nodes that consume the resulting fields, an attacker could cause the workflow to act as a confused deputy — targeting unintended records or issuing outbound requests using the workflow owner's configured credentials. This vulnerability is fixed in 2.25.7 and 2.26.2.
How severe is CVE-2026-54306?: CVE-2026-54306 has a CVSS 3.x base score of 6.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-54306 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-54306?: CVE-2026-54306 affects N8n. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-54306?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-54306 have an EU (EUVD) identifier?: Yes. CVE-2026-54306 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38474.
When was CVE-2026-54306 published?: CVE-2026-54306 was published on 2026-06-23 and last updated on 2026-06-26.

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-2vff-hj5x-8gq7

Affected products (1)

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

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