Keycloak: open redirect via "form_post.jwt" jarm response mode (Red Hat Red Hat build of Keycloak 22)

CVE-2023-6927

MEDIUM 4.6

En bref

Source: NVD
EPSS: EPSS 1.11 % · centile 66 (2026-10-30)
État: PUBLISHED
Publiée: 2023-12-18 22:59 UTC
Mise à jour: 2026-09-22 03:36 UTC
Attribuée par: redhat
Statut NVD: Modified

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Description

A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.

Faiblesses (CWE)

CWE-601 — Redirection d'URL vers un site non fiable (redirection ouverte)

Références

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	MEDIUM 4.6	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N	redhat
CVSS 3.1	MEDIUM 4.6	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N	NVD · secalert@redhat.com (Secondary)
CVSS 3.1	MEDIUM 6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	NVD · nvd@nist.gov (Primary)

Avis

GHSA-9vm7-v8wj-3fqw — keycloak-core: open redirect via "form_post.jwt" JARM response mode

Références européennes

ENISA EUVD · EUVD-2024-0318
GCVE · GCVE-0-2023-6927

Configurations affectées (CPE NVD)

cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*

Produits affectés

Produit	Versions
Red Hat · Red Hat build of Keycloak 22	unaffected 22-7 < *
Red Hat · Red Hat build of Keycloak 22.0.8
Red Hat · Red Hat Single Sign-On 7
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 7	unaffected 0:18.0.11-3.redhat_00001.1.el7sso < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 7	unaffected 0:18.0.12-1.redhat_00001.1.el7sso < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 8	unaffected 0:18.0.11-3.redhat_00001.1.el8sso < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 8	unaffected 0:18.0.12-1.redhat_00001.1.el8sso < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 9	unaffected 0:18.0.11-3.redhat_00001.1.el9sso < *
Red Hat · Red Hat Single Sign-On 7.6 for RHEL 9	unaffected 0:18.0.12-1.redhat_00001.1.el9sso < *
Red Hat · RHEL-8 based Middleware Containers	unaffected 7.6-39 < *
Red Hat · RHEL-8 based Middleware Containers	unaffected 7.6-41 < *
Red Hat · Single Sign-On 7.6.6

Sources

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

🟡 Keycloak: open redirect via "form_post.jwt" jarm response mode (Red Hat Red Hat build of Keycloak 22)