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n8n CVE-2026-86085

| EUVDEUVD-2026-74271 MEDIUM
Missing Authorization (CWE-862)
2026-09-08 security-advisories@github.com GHSA-cqr2-h44g-v75v
5.1
CVSS 4.0 · Vendor: github
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Severity by source

Vendor (github) PRIMARY
5.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
2.7 LOW

Network API, no special conditions (AC:L), requires role:manageProject privilege (PR:H), impact limited to partial confidentiality (member emails/names, C:L), no integrity or availability impact.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (github).

CVSS VectorVendor: github

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

4
Metadata Corrected
Sep 09, 2026 - 03:40 vuln.today
tag: Authentication Bypass replaced by Information Disclosure
Source Code Evidence Fetched
Sep 09, 2026 - 03:21 vuln.today
Analysis Generated
Sep 09, 2026 - 03:21 vuln.today
Patch available
Sep 08, 2026 - 22:50 EUVD

DescriptionCVE.org

n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.2, the /rest/roles/:slug/assignments and /rest/roles/:slug/assignments/:projectId/members endpoints checked only whether the caller could manage the role type. A caller with role:manageProject could name a project the caller could not list and obtain member names and email addresses. The affected controller is packages/cli/src/controllers/role.controller.ts, which omitted the project:list scope check. This issue is fixed in versions 2.37.7 and 2.38.2.

AnalysisAI

Missing authorization in n8n's role assignment API allows authenticated project managers to enumerate member names and email addresses from projects they lack permission to access. The /rest/roles/:slug/assignments and /rest/roles/:slug/assignments/:projectId/members endpoints in packages/cli/src/controllers/role.controller.ts verified only the role management permission (role:manageProject) but omitted the required project:list scope check, enabling cross-project member enumeration. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires an active, authenticated session with the role:manageProject privilege assigned in n8n. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:H/UI:N/VC:L) and score of 5.1 accurately reflect the constrained real-world risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Vendor-released patch: upgrade to n8n 2.37.7 (stable branch) or n8n 2.38.2 (prerelease branch). … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-86085 vulnerability details – vuln.today

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