n8n-io n8n up to 1.123.61 LLM Sub-node missing encryption

Summaryinfo

A vulnerability marked as problematic has been reported in n8n-io n8n. Affected by this issue is some unknown functionality of the component LLM Sub-node. The manipulation leads to missing encryption. This vulnerability is referenced as CVE-2026-65589. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in n8n-io n8n. This issue affects an unknown code of the component LLM Sub-node. The manipulation with an unknown input leads to a missing encryption vulnerability. Using CWE to declare the problem leads to CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. Impacted is confidentiality. The summary by CVE is:

n8n versions before 1.123.64 fail to properly mask custom HTTP header credentials in LLM sub-node execution data, writing plaintext API keys and secrets to workflow execution records. Authenticated users with access to execution data can read exposed header values and credentials that persist in the database and can be exported.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-65589 since 07/22/2026. The exploitation is known to be difficult. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

Upgrading to version 1.123.64 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• n8n-io

Name

• n8n

Version

• 1.90.0
• 1.98.2
• 1.99.0
• 1.107.0
• 1.113.0
• 1.114.3
• 1.118.0
• 1.120.3
• 1.121.0
• 1.121.3
• 1.123.2
• 1.123.8
• 1.123.9
• 1.123.10
• 1.123.12
• 1.123.15
• 1.123.17
• 1.123.18
• 1.123.22
• 1.123.23
• 1.123.25
• 1.123.26
• 1.123.27
• 1.123.32
• 1.123.33
• 1.123.43
• 1.123.48
• 1.123.55
• 1.123.61

Website

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

CPE 2.3info

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CPE 2.2info

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Entryinfo

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