How severe is CVE-2026-54307?

CVE-2026-54307 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-54307 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-54307?

CVE-2026-54307 affects N8n. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-54307?

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

Does CVE-2026-54307 have an EU (EUVD) identifier?

Yes. CVE-2026-54307 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38478.

When was CVE-2026-54307 published?

CVE-2026-54307 was published on 2026-06-23 and last updated on 2026-06-26.

CVE-2026-54307

CVE-2026-54307 is a critical-severity vulnerability in N8n with a CVSS 3.x base score of 9.6. 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-863.

Key facts

Severity: Critical (CVSS 3.x base score 9.6)
CVSS v4: 8.5
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38478
Weakness: CWE-863
Affected product: N8n
Published: 2026-06-23
Last modified: 2026-06-26

Description

n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, a member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credential ownership checks were only enforced partially leading to cross-user credential access. This issue affects instances where workflow sharing is enabled and at least one workflow has been shared with a member-level user as an Editor. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.

Frequently asked questions

What is CVE-2026-54307?: n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, a member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credential ownership checks were only enforced partially leading to cross-user credential access. This issue affects instances where workflow sharing is enabled and at least one workflow has been shared with a member-level user as an Editor. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.
How severe is CVE-2026-54307?: CVE-2026-54307 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-54307 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-54307?: CVE-2026-54307 affects N8n. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-54307?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-54307 have an EU (EUVD) identifier?: Yes. CVE-2026-54307 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38478.
When was CVE-2026-54307 published?: CVE-2026-54307 was published on 2026-06-23 and last updated on 2026-06-26.

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-pmqw-72cg-wx85

Affected products (1)

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

More vulnerabilities in N8n

CVE-2026-54309 — Critical (CVSS 10.0): n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP…
CVE-2026-21858 — Critical (CVSS 10.0): n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker…
CVE-2026-54305 — Critical (CVSS 9.9): n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, three EE endpoints used by…
CVE-2026-44791 — Critical (CVSS 9.9): n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, an authenticated user with…
CVE-2026-44789 — Critical (CVSS 9.9): n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, an authenticated user with…
CVE-2026-54310 — Critical (CVSS 9.9): n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, an authenticated user with permission…

All CVEs affecting N8n →

Other CWE-863 (Incorrect Authorization) vulnerabilities

CVE-2026-48286 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9396 and earlier are affected by an Incorrect Authorization…
CVE-2026-48303 — Critical (CVSS 10.0): Adobe Campaign Classic (ACC) versions 7.4.3 build 9394 and earlier are affected by an Incorrect Authorization…
CVE-2026-44330 — Critical (CVSS 10.0): free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NEF mounts the…
CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
CVE-2026-33105 — Critical (CVSS 10.0): Improper authorization in Microsoft Azure Kubernetes Service allows an unauthorized attacker to elevate privileges over…
CVE-2026-32213 — Critical (CVSS 10.0): Improper authorization in Azure AI Foundry allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-863 (Incorrect Authorization) vulnerabilities →