CVE-2026-59208 (GCVE-0-2026-59208)

Vulnerability from cvelistv5 – Published: 2026-07-09 15:27 – Updated: 2026-07-09 15:27
VLAI
Title
n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution
Summary
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.
Severity
7.6 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CWE
Assigner
References
Impacted products
Vendor Product Version
n8n-io n8n Affected: >= 2.28.0, < 2.28.1
Affected: < 2.27.4
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        }
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            "subConfidentialityImpact": "NONE",
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      "providerMetadata": {
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          "url": "https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1"
        }
      ],
      "source": {
        "advisory": "GHSA-mq3m-f8x3-579w",
        "discovery": "UNKNOWN"
      },
      "title": "n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution"
    }
  },
  "cveMetadata": {
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    "datePublished": "2026-07-09T15:27:28.126Z",
    "dateReserved": "2026-07-02T21:05:02.924Z",
    "dateUpdated": "2026-07-09T15:27:28.126Z",
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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