TI-2025-32605 Aliases CVE-2025-52478 GHSA-hfmv-hhh3-43f2

Stored XSS in n8n Form Trigger allows Account Takeover via injected iframe and video/source

MEDIUM 40CWE-79Published 2025-08-19 · Updated 2025-08-19

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: High · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

n8n is a workflow automation platform. From 1.77.0 to before 1.98.2, a stored Cross-Site Scripting (XSS) vulnerability was identified in n8n, specifically in the Form Trigger node's HTML form element. An authenticated attacker can inject malicious HTML via an <iframe> with a srcdoc payload that includes arbitrary JavaScript execution. The attacker can also inject malicious Javascript by using <video> coupled <source> using an onerror event. While using iframe or a combination of video and source tag, this vulnerability allows for Account Takeover (ATO) by exfiltrating n8n-browserId and session cookies from authenticated users who visit a maliciously crafted form. Using these tokens and cookies, an attacker can impersonate the victim and change account details such as email addresses, enabling full control over the account—especially if 2FA is not enabled. Users should upgrade to version >= 1.98.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00393 33rd percentileScored 2026-11-08

Fix Fixed n8n (n8n-io): 1.98.2n8n (npm): 1.98.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
n8n	n8n	1.77.0 to before 1.98.2	1.98.2	Patch available	CNA
—	n8n (npm)	1.77.0 to before 1.98.2	1.98.2	Patch available	GHSA-hfmv-hhh3-43f2

n8n Vendorn8n Affected 1.77.0 to before 1.98.2 Fixed in 1.98.2 Patch available CNA
n8n (npm) Vendor— Affected 1.77.0 to before 1.98.2 Fixed in 1.98.2 Patch available GHSA-hfmv-hhh3-43f2

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:n8n:n8n::::::node.js::*	1.77.0 to before 1.98.2	Vulnerable	n8n

cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* Versions 1.77.0 to before 1.98.2 Vulnerable ·n8n

Remediation

Fix · CNA n8n (n8n-io) Fixed in 1.98.2
Fix · GHSA-hfmv-hhh3-43f2 n8n (npm) Fixed in 1.98.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-52478
2026-10-03 Alias added: GHSA-hfmv-hhh3-43f2

References

Patch 3

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2025-52478

Other 1

https://github.com/n8n-io/n8n

TI-2025-42131 n8n Vulnerable to Remote Code Execution via Expression Injection KEVCVSS 3.1CRITICAL 10.0
TI-2026-17560 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling CVSS 3.1CRITICAL 10.0
TI-2026-01167 Authenticated users can bypass the Expression sandbox mechanism to achieve full remote… CVSS 3.1CRITICAL 9.9
TI-2026-00644 Sandbox escape in n8n Python task runner allows for arbitrary code execution on the underlying host. CVSS 3.1CRITICAL 9.9
TI-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
TI-2023-12275 The n8n package 0.218.0 for Node.js allows Escalation of Privileges. CVSS 3.1HIGH 8.8

See all 178 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences