CVE-2026-56359
mediumn8n before 2.8.0 contains a cross-site scripting vulnerability in the credential management flow where authenticated users can inject malicious JavaScript URLs…
Vendor / product: N8n — n8n
n8n before 2.8.0 contains a cross-site scripting vulnerability in the credential management flow where authenticated users can inject malicious JavaScript URLs into OAuth2 credential Authorization URL fields. Attackers can craft malicious credentials and trick victims into clicking the OAuth authorization button, executing arbitrary scripts in their browser session with the victim's privileges.
CVSS
5.4
5.4 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-07-08 14:17
Modified: 2026-10-29 19:17
NVD status: Analyzed
Last synced 11 hours ago
Verified against the source API 2026-10-29 19:22 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
n8n / n8n <2.6.4, ≥2.7.0 <2.8.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/n8n-io/n8n/security/advisories/GHSA-364x-8g5j-x2pr
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-364x-8g5j-x2pr disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/n8n-cross-site-scripting-in-credential-management-oau... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-29 19:22 UTC · record ↗