CVE-2026-110853 n8n - Authorization Bypass

n8n < 1.123.83 contains an authorization bypass caused by trusted identifier spoofing in Execute Sub-workflow inline JSON mode, letting authenticated members access and modify workflows they do not belong to, exploit requires authentication.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Authorization Bypass
Impact
Broken Access Control, Data Tampering
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/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
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-639

Vendor fix

Update to version 1.123.83 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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