Vigie VulnDBEuropean-hosted Vulnerability DB
EN
Menu

Keycloak: cross-session email verification proof not bound to upstream identity in first-broker-login (Red Hat Red Hat build of Keycloak 26.4)

CVE-2026-9087
MEDIUM 6.4

En bref

Source
NVD
EPSS
EPSS 0.31 % · centile 24 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
redhat
Statut NVD
Modified

Rechercher sur…

Description

A flaw was found in Keycloak. The cross-session verification proof is keyed only by (local userId, idpAlias) and is not bound to the upstream identity that was actually verified, so a second upstream account on the same IdP can consume it and get linked to the victim's local account.

Faiblesses (CWE)

  • CWE-639 — Contournement d'autorisation par clé contrôlée par l'utilisateur (IDOR)

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 6.4CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:Nredhat
CVSS 3.1MEDIUM 6.4CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:NNVD · secalert@redhat.com (Secondary)
CVSS 3.1HIGH 8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:NNVD · nvd@nist.gov (Primary)

Avis

Références européennes

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Red Hat · Red Hat build of Keycloak 26.4unaffected 26.4.13-1 < *
Red Hat · Red Hat build of Keycloak 26.4unaffected 26.4-19 < *
Red Hat · Red Hat build of Keycloak 26.4unaffected 26.4-19 < *
Red Hat · Red Hat build of Keycloak 26.4.13
Red Hat · Red Hat build of Keycloak 26.6unaffected 26.6.3-3 < *
Red Hat · Red Hat build of Keycloak 26.6unaffected 26.6-6 < *
Red Hat · Red Hat build of Keycloak 26.6unaffected 26.6-6 < *
Red Hat · Red Hat build of Keycloak 26.6.3

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD