CVE-2026-59208: n8n is an open source workflow automation platform

Routine

MEDIUM 6.8UPGRADE

CVE-2026-59208 is a medium-severity flaw (CVSS 6.8) affecting n8n. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacker with a valid token from one trusted issuer and a sub matching a victim under another issuer to authenticate as that victim. This issue is fixed in vers

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 82%)
CISA exploited list	No
Weakness	CWE-287, CWE-346
Published	2026-07-09
Last modified	2026-10-25

Publisher (CNA): GitHub, Inc. · Vendor: n8n

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-09 16:16 UTCPublished CVE record published
2026-10-25 17:10 UTCUpdated Record last modified

n8n n8n UPGRADE

Affected: < 2.27.4 · 2.28.0

Fixed in: 2.27.4

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls n8n

2. UPGRADE to 2.27.4

npm install n8n@">=2.27.4"

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-2026-59208?

n8n: upgrade to 2.27.4. Exact commands for each OS are on this page.

Is CVE-2026-59208 being exploited?

CVE-2026-59208 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-2026-59208 affect?

CVE-2026-59208 affects n8n. Severity is medium (CVSS 6.8). n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT

How urgent is CVE-2026-59208?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2026-59206 HIGH 7.1 UPGRADE n8n is an open source workflow automation platform
CVE-2026-59207 MEDIUM 6.5 UPGRADE n8n is an open source workflow automation platform
CVE-2026-59209 MEDIUM 6.5 UPGRADE n8n is an open source workflow automation platform
CVE-2026-56777 MEDIUM 5.0 UPGRADE n8n before 2.25.7 and 2.26.x before 2.26.2 contains an abstract syntax tree (AST) security validator bypass in
CVE-2026-58661 MEDIUM 4.3 UPGRADE n8n before 2.28.0 (and before 1.123.58 on the 1.x branch) contains a disk space exhaustion vulnerability in th

References

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