CVE-2026-59253Medium▾ Sunlitn8n: Improper Authorization Allows Authenticated Users to Assign Workflows to Folders in Other Projects
▾ Sunlit zone — Low / medium · no exploitation signal
impact 27.5 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Jul 22.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via GHSA
0.2%
0.2% → 0.3%
An authenticated user with permission to create workflows in one project could bypass project/folder authorization boundaries during workflow creation. By supplying a crafted request payload, the user could associate a newly created workflow with a folder belonging to a different project they do not have access to.
The workflow itself remains in the attacker's project and is not visible to the target project's members. The target project's folder ownership is not changed, and no data from the target project is exposed. The impact is limited to a logical integrity violation of the target project's folder structure at the database level.
This issue affects instances with multi-project and folder support enabled.
The issue has been fixed in n8n version 2.28.0. Users should upgrade to this version or later to remediate the vulnerability.
If upgrading is not immediately possible, administrators should consider the following temporary mitigations:
This workaround does not fully remediate the risk and should only be used as a short-term mitigation measure.
n8n < 2.28.0Upgrade to a patched release:
n8n 2.28.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-59259Mediumn8n: External Secrets Permission Bypass via Expression Parser Mismatch
CVE-2026-59254Mediumn8n: External Secrets Accessible via Workflow Expressions Outside Credentials
CVE-2026-58661Mediumn8n: Authenticated Users Can Exhaust Temporary Disk Storage via Data-Table File Uploads
CVE-2026-65014Mediumn8n: Unauthenticated Endpoint Allows Cancellation of Any User's Active Test Webhook
GHSA-mwq7-vcmc-cm4qHighDuplicate Advisory: SSO Instance-Role Provisioning Allows Privilege Escalation to Instance Owner
CVE-2026-65016Highn8n: SSO Instance-Role Provisioning Allows Privilege Escalation to Instance Owner