Vulnerability · Published Jun 23, 2026 · Assigned by GitHub_M

CVE-2026-54302n8n: Stored XSS in Chat Trigger Node

High 7.0

In plain English

A high-severity cross-site scripting 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 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.0High

Exploit odds (30 days)0.2%top 86.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, an authenticated user with workflow edit access could inject arbitrary JavaScript into the Chat Trigger's generated page by setting a malicious webhookId. When a logged-in user visited the chat URL, the injected code executed in the n8n origin with that user's session privileges. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	1.123.55	GHSA-42h7-m79w-wvg5
npm	n8n	2.26.2	GHSA-42h7-m79w-wvg5
npm	n8n	2.25.7	GHSA-42h7-m79w-wvg5

Affected products (as reported)

Vendor	Product	Versions
n8n-io	n8n	< 1.123.55>= 2.0.0-rc.0, < 2.25.7>= 2.26.0, < 2.26.2

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-42h7-m79w-wvg5 x_refsource_CONFIRM