Cleartext Storage of Sensitive Information Affecting n8n-nodes-base package, versions <1.121.40>=2.0.0-rc.0 <2.29.7>=2.30.0 <2.30.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published28 Jul 2026
- disclosed22 Jul 2026
- creditShmulik Ladkani
Introduced: 22 Jul 2026
NewCVE-2026-65599 (opens in a new tab)How to fix?
Upgrade n8n-nodes-base to version 1.121.40, 2.29.7, 2.30.1 or higher.
Overview
n8n-nodes-base is a Base nodes of n8n
Affected versions of this package are vulnerable to Cleartext Storage of Sensitive Information in the process that handles Google Service Account credentials, where the full PEM private key is placed in the JWT header's kid field instead of a key identifier. An attacker can gain unauthorized access to Google Cloud resources by recovering the private key from Base64-encoded JWT headers that are logged or inspected.
Note: This is only exploitable if Google Service Account credentials are configured.
Workaround
This vulnerability can be mitigated by avoiding the use of Google Service Account credentials until the instance is patched, rotating any potentially exposed Google Service Account keys, and reviewing logs for JWT headers containing key material and treating such keys as compromised.