n8n-io n8n up to 1.123.63 Dynamic Node Parameter absolute_urls server-side request forgery

Summaryinfo

A vulnerability classified as critical has been found in n8n-io n8n up to 1.123.63. This vulnerability affects unknown code of the component Dynamic Node Parameter. This manipulation of the argument absolute_urls causes server-side request forgery. This vulnerability is tracked as CVE-2026-65593. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in n8n-io n8n up to 1.123.63 and classified as critical. Affected by this vulnerability is some unknown processing of the component Dynamic Node Parameter. The manipulation of the argument absolute_urls with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

n8n versions before 1.123.64 contain a server-side request forgery vulnerability in the dynamic-node-parameters endpoints that lack authorization scopes. Authenticated attackers can supply absolute URLs in routing configuration to override baseURL restrictions and make the n8n server issue HTTP requests to arbitrary internal targets when SSRF protection is disabled.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-65593 since 07/22/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 1.123.64 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• n8n-io

Name

• n8n

Version

• 1.123.0
• 1.123.1
• 1.123.2
• 1.123.3
• 1.123.4
• 1.123.5
• 1.123.6
• 1.123.7
• 1.123.8
• 1.123.9
• 1.123.10
• 1.123.11
• 1.123.12
• 1.123.13
• 1.123.14
• 1.123.15
• 1.123.16
• 1.123.17
• 1.123.18
• 1.123.19
• 1.123.20
• 1.123.21
• 1.123.22
• 1.123.23
• 1.123.24
• 1.123.25
• 1.123.26
• 1.123.27
• 1.123.28
• 1.123.29
• 1.123.30
• 1.123.31
• 1.123.32
• 1.123.33
• 1.123.34
• 1.123.35
• 1.123.36
• 1.123.37
• 1.123.38
• 1.123.39
• 1.123.40
• 1.123.41
• 1.123.42
• 1.123.43
• 1.123.44
• 1.123.45
• 1.123.46
• 1.123.47
• 1.123.48
• 1.123.49
• 1.123.50
• 1.123.51
• 1.123.52
• 1.123.53
• 1.123.54
• 1.123.55
• 1.123.56
• 1.123.57
• 1.123.58
• 1.123.59
• 1.123.60
• 1.123.61
• 1.123.62
• 1.123.63

Website

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

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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