CVE-2026-65594Medium· 5.1▾ Sunlitn8n before 2.29.8 and 2.30.x before 2.30.1 (affected from 2.27.0, when the OAuth 2.1 consent and token-issuance flow was introduced) does not verify that the authenticated user has access to the workflow referenced as the OAuth resource.…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 28.1 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Exploit-prediction probability, daily snapshots since Aug 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.3%
0.3% → 0.4%
Last analysed / modified upstream
— → 5.1
n8n before 2.29.8 and 2.30.x before 2.30.1 (affected from 2.27.0, when the OAuth 2.1 consent and token-issuance flow was introduced) does not verify that the authenticated user has access to the workflow referenced as the OAuth resource. On instances with at least one active MCP Server Trigger workflow configured with n8n OAuth2 authentication, a member-level user can register an OAuth client, self-approve consent for another user's workflow, and obtain a valid token. The workflow then runs in the owner's project context with the owner's stored credentials, and the attacker can set tool inputs and read outputs (potentially including data from the owner's connected integrations), breaking user and project isolation.
n8n >= 2.30.0 < 2.30.1n8n < 2.29.8Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
n8n >= 2.30.0, < 2.30.1n8n < 2.29.8Patched in:
n8n 2.30.1n8n 2.29.8Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
GHSA-5vfw-jc4p-fj39MediumDuplicate Advisory: Member-Level Users Can Execute Other Users' MCP Server Trigger Workflows via Missing OAuth Authorization Check
CVE-2026-65596Medium· 5.1n8n before 1.123.64 Credential Exfiltration via GraphQL Node
CVE-2026-65015High· 7.2n8n before 2.30.1 Privilege Escalation via run_node_tool
CVE-2026-65590Medium· 5.5n8n before 2.30.1 Shell Sandbox Bypass on Linux Windows
CVE-2026-65589Medium· 5.1n8n before 1.123.64 Credential Exposure via LLM Node Execution Data
CVE-2026-65595High· 8.9n8n before 2.29.8 and 2.30.1 Privilege Escalation via Token Exchange