[UPDATE] [high] n8n: Multiple vulnerabilities

highCVE-2026-56356 CVE-2026-56359 CVE-2026-27496 CVE-2026-33660 CVE-2026-33663 CVE-2026-33665

An attacker can exploit multiple vulnerabilities in n8n to gain elevated privileges, including administrator rights, execute arbitrary code, manipulate data, bypass security measures, disclose confidential information, or conduct cross-site and man-in-the-middle attacks.

CSIRTS triage

vendor: n8n product: n8n Privilege escalation Remote code executionOtherInformation disclosure Authentication bypass

What: An attacker can exploit multiple vulnerabilities in n8n to gain elevated privileges, including administrator rights, execute arbitrary code, manipulate data, bypass security measures, disclose confidential information, or conduct cross-site and man-in-the-middle attacks.
Who is affected: Users of n8n in affected versions.
Urgency: Remediation is urgent due to the high severity and potential impact of the vulnerabilities.
Action: Update to the latest version of n8n.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-07-09
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0877

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-563560.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all scored CVEs.
Low exploitation riskCVE-2026-563590.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all scored CVEs.
Low exploitation riskCVE-2026-274960.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 18% of all scored CVEs.
Low exploitation riskCVE-2026-336600.95% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 57% of all scored CVEs.
Low exploitation riskCVE-2026-336630.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all scored CVEs.
Low exploitation riskCVE-2026-336650.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.
Low exploitation riskCVE-2026-336960.77% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 51% of all scored CVEs.
Low exploitation riskCVE-2026-337200.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all scored CVEs.
Low exploitation riskCVE-2026-337220.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all scored CVEs.
Low exploitation riskCVE-2026-337240.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-56356	coverage & exploitation status	NVD · CVE.org
CVE-2026-56359	coverage & exploitation status	NVD · CVE.org
CVE-2026-27496	coverage & exploitation status	NVD · CVE.org
CVE-2026-33660	coverage & exploitation status	NVD · CVE.org
CVE-2026-33663	coverage & exploitation status	NVD · CVE.org
CVE-2026-33665	coverage & exploitation status	NVD · CVE.org
CVE-2026-33696	coverage & exploitation status	NVD · CVE.org
CVE-2026-33720	coverage & exploitation status	NVD · CVE.org
CVE-2026-33722	coverage & exploitation status	NVD · CVE.org
CVE-2026-33724	coverage & exploitation status	NVD · CVE.org
CVE-2026-33749	coverage & exploitation status	NVD · CVE.org
CVE-2026-33751	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for n8n

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-58661: n8n before 2.28.0 (and before 1.123.58 on the 1.x branch) contains a disk space exhaustion vul…nvd · 2026-07-10
mediumCVE-2026-56354: n8n before 1.123.24, 2.10.4, and 2.12.0 (across its 1.x and 2.x branches) contains cross-site …nvd · 2026-07-10
high[UPDATE] [high] n8n: Multiple vulnerabilitiescert-bund · 2026-07-10
unknownCVE-2026-59209: n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an…nvd · 2026-07-09
mediumCVE-2026-59208: n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2…nvd · 2026-07-09
mediumCVE-2026-59207: n8n is an open source workflow automation platform. Prior to 2.27.4 and 2.28.1, the AI Agents …nvd · 2026-07-09