highVulnerability
GHSA-vhcw-f978-xjjg
## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-p3rg-hrf9-w9gj. This link is maintained to preserve external references. ## Original Description n8n before 1.123.64, 2.x before 2.29.8, and before 2.30.1 contains a DOM-based cross-site scripting vulnerability in the HTML preview, which renders execution output into an iframe srcdoc without the sandbox attribute. A sanitizer bypass allows injected script to execute same-origin as the editor. When a victim opens the preview, the script can call authenticated APIs using the victim's session. An account with global:member privileges can exploit the issue.
Properties
- ghsa_id
- GHSA-vhcw-f978-xjjg
- severity
- high
- summary
- Duplicate Advisory: DOM-Based XSS via Unsandboxed iframe srcdoc in HTML Preview
- cve_id
- GHSA-vhcw-f978-xjjg
- is_ghsa_only
- true
- ghsa_published
- 2026-07-22T12:32:18Z
- source_url
- https://github.com/advisories/GHSA-vhcw-f978-xjjg
- ghsa_updated
- 2026-07-22T17:55:01Z
Related Entities (4)
VULNERABLE_TO (1)
←[Software]npm/n8n
AFFECTS (1)
→[Software]npm/n8n
HAS_WEAKNESS (1)
→[Weakness]Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
REPORTED_BY (1)
→[Source]GitHub Advisory Database
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