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Back to active CVEs
Medium · CVSS 5.1CVE-2026-65599

n8n before 1.123.64, 2.29.8, and 2.30.1 Credential Exposure via JWT HeaderCVE-2026-65599

Answer in brief

CVE-2026-65599 records a Medium severity (CVSS 5.1) vulnerability in n8n before 1.123.64, 2.29.8, and 2.30.1 Credential Exposure via JWT Header. The current sources do not mark it as known exploited. The current feed maps n8n-io/n8n (generic), n8n-io/n8n (generic), n8n-io/n8n (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 22, 2026Updated Oct 29, 2026Source checked Oct 29, 2026First seen by HOL Oct 28, 2026Material review Oct 29, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.1
Exploitation
Not marked as known exploited
Affected software
7 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 5.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps n8n-io/n8n (generic), n8n-io/n8n (generic), n8n-io/n8n (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:community:node.js:*:*Not reportedNot reported
cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:enterprise:node.js:*:*Not reportedNot reported
cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*Not reportedNot reported
cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
n8n-io/n8ngeneric>=0 <1.123.641.123.64
n8n-io/n8ngeneric>=2.30.0 <2.30.12.30.1
n8n-io/n8ngeneric>=2.0.0-rc.0 <2.29.82.29.8

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for n8n-io/n8n, n8n-io/n8n, n8n-io/n8n.
  2. 2Review the reported fix. Update n8n-io/n8n to 1.123.64; n8n-io/n8n to 2.30.1; n8n-io/n8n to 2.29.8 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jul 22, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 29, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 28, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

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 impersonate the service account and access or modify any Google Cloud resource it was authorized to use. Only instances using Google Service Account credentials are affected.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Secret Exfiltration
EPSS
Not reported
CWE IDs
CWE-312
Source
CVE List V5
Source checked
Oct 29, 2026
References
2 linked sources
Open source record