CVE-2026-4349

MEDIUM

5.6

Description

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.

Details CVE

Score CVSS v3.15.6

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisNONE

Interaction utilisateurNONE

Publie3/17/2026

Derniere modification3/25/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-287

References

https://vuldb.com/?ctiid.351380(cna@vuldb.com)

https://vuldb.com/?id.351380(cna@vuldb.com)

https://vuldb.com/?submit.772071(cna@vuldb.com)

Correlations IOC

Aucune correlation enregistree

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