Vulnerability · Published Jul 22, 2026 · Assigned by VulnCheck

CVE-2026-65589n8n before 1.123.64 Credential Exposure via LLM Node Execution Data

Medium 5.1

In plain English

A medium-severity sensitive data in logs in n8n from n8n-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.5%top 58.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	n8n	1.123.64	GHSA-89gh-3pgc-v5h2
npm	n8n	2.30.1	GHSA-89gh-3pgc-v5h2
npm	n8n	2.29.8	GHSA-89gh-3pgc-v5h2

Affected products (as reported)

Vendor	Product	Versions
n8n-io	n8n	0 – before 1.123.64
n8n-io	n8n	2.30.0 – before 2.30.1
n8n-io	n8n	2.0.0-rc.0 – before 2.29.8

Weakness: CWE-532 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:L/SA:N

References

GitHub Security Advisory (GHSA-89gh-3pgc-v5h2) vendor-advisory
VulnCheck Advisory: n8n before 1.123.64 Credential Exposure via LLM Node Execution Data third-party-advisory