n8n-io n8n up to 1.123.1 Webhook cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability was found in n8n-io n8n up to 1.123.1 and classified as problematic. Affected is an unknown function of the component Webhook Handler. The manipulation results in cross site scripting. This vulnerability is identified as CVE-2026-25051. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in n8n-io n8n up to 1.123.1. Affected is an unknown code of the component Webhook Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

n8n is an open source workflow automation platform. Prior to version 1.123.2, a Cross-Site Scripting (XSS) vulnerability has been identified in the handling of webhook responses and related HTTP endpoints. Under certain conditions, the Content Security Policy (CSP) sandbox protection intended to isolate HTML responses may not be applied correctly. An authenticated user with permission to create or modify workflows could abuse this to execute malicious scripts with same-origin privileges when other users interact with the crafted workflow. This could lead to session hijacking and account takeover. This issue has been patched in version 1.123.2.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-25051 since 01/28/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability scanner Nessus provides a plugin with the ID 298986 (n8n Node.js Package < 1.122.5 / 1.123.x < 1.123.2 Stored XSS (CVE-2026-25051)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.123.2 eliminates this vulnerability. Applying the patch ced34c0f93ab4c759a56065965986094d8ef7323 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (298986) and CERT Bund (WID-SEC-2026-0318). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • n8n n8n

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.4
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298986
Nessus Name: n8n Node.js Package < 1.122.5 / 1.123.x < 1.123.2 Stored XSS (CVE-2026-25051)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: n8n 1.123.2
Patch: ced34c0f93ab4c759a56065965986094d8ef7323

Timelineinfo

01/28/2026 CVE reserved
02/04/2026 +7 days Advisory disclosed
02/04/2026 +0 days VulDB entry created
02/14/2026 +10 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-825q-w924-xhgx
Status: Confirmed

CVE: CVE-2026-25051 (🔒)
GCVE (CVE): GCVE-0-2026-25051
GCVE (VulDB): GCVE-100-344376
CERT Bund: WID-SEC-2026-0318 - n8n: Mehrere Schwachstellen

Entryinfo

Created: 02/04/2026 18:38
Updated: 02/14/2026 05:13
Changes: 02/04/2026 18:38 (70), 02/05/2026 16:14 (7), 02/06/2026 05:28 (11), 02/14/2026 05:13 (2)
Complete: 🔍
Cache ID: 216::103

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