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GHSA-mvh4-2cm2-6hpg

MediumCVSS 4.1 / 10
Published Sep 15, 2025·Last modified Sep 15, 2025
Affected Components(0)

No affected components available

Description

Impact

A stored Cross-Site Scripting (XSS) vulnerability was identified in the @n8n/n8n-nodes-langchain.chatTrigger node in n8n. If an authorized user configures the node with malicious JavaScript in the initialMessages field and enables public access, the script will be executed in the browser of anyone who visits the resulting public chat URL.

This vulnerability could be exploited for phishing or to steal cookies or other sensitive data from users who access the public chat link, posing a security risk.

Patches

This issue has been patched in version 1.107.0 of n8n. Users should upgrade to version 1.107.0 or later.

Workarounds

Disabling the n8n-nodes-langchain.chatTrigger node (docs)

References

#18148

Risk Scores
Base Score
4.1

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the confidentiality of the information.

Threat Intelligence
3.8

Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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