cvedb.io
CVE-2026-4349
MEDIUM · CVSS 5.6
EPSS exploitation probability: 0%
Published 2026-03-17T22:16:15.407 · Last modified 2026-06-17T10:56:27.440

Summary

A vulnerability was determined in Duende IdentityServer4 up to 4.1.2. The affected element is an unknown function of the file /connect/authorize of the component Token Renewal Endpoint. This manipulation of the argument id_token_hint causes improper authentication. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. This vulnerability only affects products that are no longer supported by the maintainer.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.