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EUVD-2026-12659

🗓️ 18 Mar 2026 00:30:54Reported by EUVDType 
euvd
 euvd
🔗 euvd.enisa.europa.eu👁 1 Views

Duende 4 flaw enables remote id_token_hint manipulation in token renewal, causing authentication bypass.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-4349
17 Mar 202621:32
attackerkb
CNNVD
Duende IdentityServer 授权问题漏洞
17 Mar 202600:00
cnnvd
CVE
CVE-2026-4349
17 Mar 202621:32
cve
Cvelist
CVE-2026-4349 Duende IdentityServer4 Token Renewal Endpoint authorize improper authentication
17 Mar 202621:32
cvelist
NVD
CVE-2026-4349
17 Mar 202622:16
nvd
Positive Technologies
PT-2026-25949
17 Mar 202600:00
ptsecurity
RedhatCVE
CVE-2026-4349
26 Mar 202615:06
redhatcve
Vulnrichment
CVE-2026-4349 Duende IdentityServer4 Token Renewal Endpoint authorize improper authentication
17 Mar 202621:32
vulnrichment
[
  {
    "enisaIdVendor": [
      {
        "id": "6f3238cd-9763-328e-b7e4-304f1559b0e8",
        "vendor": {
          "name": "Duende"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "5ce8de26-39a9-3408-aa83-135717522baa",
        "product": {
          "name": "IdentityServer"
        },
        "product_version": "4"
      }
    ]
  }
]

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18 Mar 2026 00:30Current
5.4Medium risk
Vulners AI Score5.4
CVSS 46.3
CVSS 25.1
CVSS 3.15.6
CVSS 35.6
EPSS0.00024
SSVC
1