CVE-2026-54303 | n8n is an open source workflow automation platform. Prior to… | CVSS 6.8 MEDIUM

Description

n8n is an open source workflow automation platform. Prior to 2.24.0, an endpoint in the Meta and Microsoft Teams trigger nodes reflects a query parameter into the HTTP response without sanitization or Content-Security-Policy headers, enabling reflected XSS in the n8n origin when a logged-in user visits a crafted URL. This vulnerability is fixed in 2.24.0.

Metadata

CVE ID: CVE-2026-54303
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-12 17:46 UTC
Published: 2026-06-23 15:32 UTC
Last updated: 2026-06-23 15:32 UTC
Primary CWE: CWE-79
CWE-79: Improper Neutralization of Input During Web Page Gen…
Vendor / Product: n8n-io / n8n
Sources: cve.org · NVD

Severity & Metrics

6.8 MEDIUM CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N

Affected products (1)

Vendor	Product	Platform	Versions
n8n-io	n8n	—	< 2.24.0

Weakness (CWE)

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

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.8	MEDIUM	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N

References (1)

https://github.com/n8n-io/n8n/security/advisories/GHSA-h86q-fx34-gfjr https://github.com/n8n-io/n8n/security/advisories/GHSA-h86q-fx34-gfjr