Medium severity6.8NVD Advisory· Published Jul 9, 2026· Updated Jul 14, 2026
CVE-2026-59208
CVE-2026-59208
Description
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 versions 2.27.4 and 2.28.1.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
n8nnpm | >= 2.28.0, < 2.28.1 | 2.28.1 |
n8nnpm | < 2.27.4 | 2.27.4 |
Affected products
1Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-mq3m-f8x3-579wghsaADVISORY
- github.com/n8n-io/n8n/security/advisories/GHSA-mq3m-f8x3-579wnvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-59208ghsaADVISORY
- github.com/n8n-io/n8n/releases/tag/n8n%402.27.4nvdRelease Notes
- github.com/n8n-io/n8n/releases/tag/n8n%402.28.1nvdRelease Notes
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
News mentions
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