The vulnerability of the MCP OAuth component of the automation platform for N8n processes allows attackers to perform cross-site scripting attacks.
🗓️ 15 May 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 6 Views
| Reporter | Title | Published | Views | Family All 15 |
|---|---|---|---|---|
 | CVE-2026-42235 | 4 May 202618:38 | – | attackerkb |
 | CVE-2026-42235 | 4 May 202621:11 | – | circl |
 | n8n 跨站脚本漏洞 | 4 May 202600:00 | – | cnnvd |
 | CVE-2026-42235 | 4 May 202618:38 | – | cve |
 | CVE-2026-42235 n8n: XSS via MCP OAuth client | 4 May 202618:38 | – | cvelist |
 | EUVD-2026-27110 | 4 May 202618:38 | – | euvd |
 | n8n Vulnerable to XSS via MCP OAuth client | 29 Apr 202621:23 | – | github |
 | CVE-2026-42235 | 4 May 202619:16 | – | nvd |
 | CVE-2026-42235 n8n: XSS via MCP OAuth client | 4 May 202618:38 | – | osv |
| GHSA-537J-GQPC-P7FQ n8n Vulnerable to XSS via MCP OAuth client | 29 Apr 202621:23 | – | osv |
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15 May 2026 00:00Current
5.5Medium risk
Vulners AI Score5.5
CVSS 39.6
CVSS 210
EPSS0.00332