CVE-2026-110849

n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Binary-Data File Preview

State: Published
Severity: 7.2 High
Published: Oct 14, 2026
Updated: Oct 15, 2026
Reserved: Oct 14, 2026

Description

n8n before 1.123.83, 2.41.4, and 2.42.1 contains a stored cross-site scripting vulnerability in the file-preview modal, which re-publishes binary data as an unsandboxed same-origin blob URL. A member who uploads a crafted item can run script in the n8n origin of whoever previews it, typically the owner, and act with their session.

Scores

CVSS	Score	Vector	Source
4.0	7.2 High	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	VulnCheck

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
n8nn8n-io	before 1.123.83Affected 2.0.0 to before 2.41.4Affected 2.42.0 to before 2.42.1Affected

References

GitHub Security Advisory (GHSA-29xw-66fq-4xc3)vendor-advisory
VulnCheck Advisory: n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Binary-Data File Previewthird-party-advisory

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