CVE-2026-110849 n8n - Stored XSS

n8n < 1.123.83, 2.41.4, and 2.42.1 contains a stored cross-site scripting caused by re-publishing binary data as an unsandboxed same-origin blob URL in the file-preview modal, letting authenticated members execute scripts in the session of previewers, exploit requires attacker to upload crafted item.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/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
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to version 1.123.83, 2.41.4, 2.42.1 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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