Insertion of Sensitive Information into Log File Affecting n8n-nodes-base package, versions <1.121.44>=2.0.0 <2.33.1>=2.34.0 <2.34.1
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 Sept 2026
- disclosed20 Aug 2026
- creditMasofgon
Introduced: 20 Aug 2026
CVE-2026-77076 (opens in a new tab)How to fix?
Upgrade n8n-nodes-base to version 1.121.44, 2.33.1, 2.34.1 or higher.
Overview
n8n-nodes-base is a Base nodes of n8n
Affected versions of this package are vulnerable to Insertion of Sensitive Information into Log File in the GraphQL node's error handling, which re-throws the underlying HTTP client error unchanged on a connection level failure rather than wrapping it in the standard error type, so the error object carries the live request's headers, including the decrypted credential secret, and the execution engine stores it verbatim. A user with execution read access can recover decrypted credential secrets by reading the stored run data for an execution in which a GraphQL node failed to connect. This requires an authenticated account with permission to read executions and a connection level failure rather than an application level GraphQL error, which an attacker able to author or influence a workflow can arrange by pointing the node at an unreachable host.
Workaround
This vulnerability can be avoided by disabling the GraphQL node through the NODES_EXCLUDE environment variable.