Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

GHSA-v4pr-fm98-w9pg

n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling
Back to all
CVE

GHSA-v4pr-fm98-w9pg

n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling

Impact

A vulnerability in n8n allows an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker. This could result in exposure of sensitive information stored on the system and may enable further compromise depending on deployment configuration and workflow usage.

Patches

The issue has been fixed in n8n version 1.121.0. Users should upgrade to this version or later to remediate the vulnerability.

Workarounds

No official workarounds are available. As a temporary mitigation, users may restrict or disable publicly accessible webhook and form endpoints until upgrading.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
10
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
C
H
U
10
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Related Resources

No items found.

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-v4pr-fm98-w9pg, https://nvd.nist.gov/vuln/detail/CVE-2026-21858, https://github.com/n8n-io/n8n

Severity

10

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
10
EPSS Probability
0.00025%
EPSS Percentile
0.06397%
Introduced Version
1.65.0,1.96.1
Fix Available
1.121.0,1.119.0,1.120.0

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading