Vulnerability · Published Aug 20, 2026 · Assigned by VulnCheck

CVE-2026-77075n8n before 1.123.69 Expression Injection via Resource Locator

High 8.4

In plain English

A high-severity code injection in n8n from n8n-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 4.0)8.4High

Exploit odds (30 days)0.5%top 60.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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).

Affected products (as reported)

Vendor	Product	Versions
n8n-io	n8n	0 – before 1.123.69
n8n-io	n8n	2.34.0 – before 2.34.1
n8n-io	n8n	2.0.0 – before 2.33.4

Weakness: CWE-94 · Vector: 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

References

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