Medium severity · published Jul 22, 2026
CVE-2026-65589
n8n before 1.123.64 Credential Exposure via LLM Node Execution Data
6.5
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
n8n · n8n-io
before 1.123.64; before 2.30.1; before 2.29.8 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-65589
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-65589
Mitigation
https://github.com/n8n-io/n8n/security/advisories/GHSA-89gh-3pgc-v5h2
Third Party Advisory
https://www.vulncheck.com/advisories/n8n-before-credential-exposure-via-llm-node-execution-data
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