# CVE-2026-56359: n8n - Cross-Site Scripting in Credential Management OAuth2 Authorization URL

> CVE-2026-56359: n8n - Cross-Site Scripting in Credential Management OAuth2 Authorization URL. CVSS 5.4 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-56359
Last updated: 2026-07-09T15:16:38Z

- Published: 2026-07-08 13:49 UTC · Updated: 2026-07-09 15:16 UTC · Assigner: VulnCheck
- CVSS: 5.4 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS: 0.24%, 15th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-79

## Description

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.

## Affected vendors and products

- n8n: n8n

## Tracked companies

- [n8n](https://rewindex.com/company/n8n.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-56359)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-56359)
- [https://github.com/n8n-io/n8n/security/advisories/GHSA-364x-8g5j-x2pr](https://github.com/n8n-io/n8n/security/advisories/GHSA-364x-8g5j-x2pr)
- [https://www.vulncheck.com/advisories/n8n-cross-site-scripting-in-credential-management-oauth2-authorization-url](https://www.vulncheck.com/advisories/n8n-cross-site-scripting-in-credential-management-oauth2-authorization-url)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-56359 · Markdown: https://rewindex.com/cve/CVE-2026-56359.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-56359 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:24.984Z