CVE-2026-77075

n8n before 1.123.69 Expression Injection via Resource Locator

State: Published
Severity: 8.4 High
Published: Aug 20, 2026
Updated: Aug 21, 2026
Reserved: Aug 20, 2026

Description

n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 contain an expression injection vulnerability in resource-locator field link preview rendering. The editor spliced the field's stored value directly into the node type's URL template without checking for expression syntax. An authenticated member can store a malicious value so that when another user opens the affected node in the editor, the injected expression is evaluated as JavaScript in the victim's authenticated session (cross-user script execution).

Scores

CVSS	Score	Vector	Source
4.0	8.4 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N	VulnCheck

Weaknesses

CWE-94 Improper Control of Generation of Code ('Code Injection')

Affected Products

Product	Versions
n8nn8n-io	before 1.123.69Affected 1.123.69Not affected
n8nn8n-io	2.34.0 to before 2.34.1Affected 2.34.1Not affected
n8nn8n-io	2.0.0 to before 2.33.4Affected 2.33.4Not affected

References

GitHub Security Advisory (GHSA-fh4c-9rr2-p7qc)vendor-advisory
VulnCheck Advisory: n8n before 1.123.69 Expression Injection via Resource Locatorthird-party-advisory

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