CVE-2026-65599: n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a credential exposure vulnerability: when configured

Q: How do I fix CVE-2026-65599?

n8n: upgrade to 1.123.64, 2.29.8. Exact commands for each OS are on this page.

Q: Is CVE-2026-65599 being exploited?

CVE-2026-65599 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-65599 affect?

CVE-2026-65599 affects n8n. Severity is medium (CVSS 6.5). n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a credential exposure vulnerability: when configured with a Google Service Account key, the full PEM private key was mistakenly placed in the JWT header's kid field (intended only for

Q: How urgent is CVE-2026-65599?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2026-65599 is a medium-severity flaw (CVSS 6.5) affecting n8n. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a credential exposure vulnerability: when configured with a Google Service Account key, the full PEM private key was mistakenly placed in the JWT header's kid field (intended only for a key identifier). Because JWT headers are Base64-encoded rather than encrypted, the private key could be recovered by anything that logged or inspected the JWT. An attacker who obtained the key could imperson

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-312
Published	2026-07-22
Last modified	2026-10-24

Publisher (CNA): VulnCheck · Vendor: n8n

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-22 12:18 UTCPublished CVE record published
2026-10-24 17:10 UTCUpdated Record last modified

n8n n8n UPGRADE

Affected: < 1.123.64 · >= 2.0.0 and < 2.29.8 · 2.30.0

Fixed in: 1.123.64, 2.29.8

Safe to downgrade to: a release before 2.0.0

1. Check installed version

npm ls n8n

2. UPGRADE to 1.123.64

npm install n8n@">=1.123.64"

3. If no update is available yet, DOWNGRADE to a release before 2.0.0

npm view n8n versions npm install n8n@"<2.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-65599?

n8n: upgrade to 1.123.64, 2.29.8. Exact commands for each OS are on this page.

Is CVE-2026-65599 being exploited?

CVE-2026-65599 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-65599 affect?

CVE-2026-65599 affects n8n. Severity is medium (CVSS 6.5). n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a credential exposure vulnerability: when configured with a Google Service Account key, the full PEM private key was mistakenly placed in the JWT header's kid field (intended only for

How urgent is CVE-2026-65599?

Priority 27/100. No elevated risk signals yet.

Related CVEs

CVE-2026-65590 CRITICAL 9.8 UPGRADE n8n before 2.29.8 and 2.30.x before 2.30.1 does not enforce shell sandbox restrictions on Linux and Windows in
CVE-2026-65591 HIGH 8.8 UPGRADE n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler
CVE-2026-65595 HIGH 8.8 UPGRADE n8n before 2.30.1 and 2.29.8 assigns all Public API key scopes to JWTs issued through the Token Exchange modul
CVE-2026-65015 HIGH 8.8 UPGRADE n8n versions before 2.30.1 contain a privilege escalation vulnerability in the AI Agents feature where the nod
CVE-2026-65016 HIGH 8.8 UPGRADE n8n versions before 1.123.64, 2.29.8, and 2.30.1 contain a privilege escalation vulnerability in Enterprise SS

References

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