CVE-2026-59208

mediumCVSS 6.8covered by 1 sourcefirst seen 2026-07-09

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.

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Exploitation outlook

Low exploitation risk0.14% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 4% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-59208: n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2…nvd · 2026-07-09

External references

NVD record for CVE-2026-59208

CVE.org record

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