CVE-2026-4629: medium-severity vulnerability in Red Hat build of Keycloak 26.4
Keycloak: keycloak: privilege escalation through hardcoded role mapper injection
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.5%
A flaw was found in Keycloak. A highly privileged user with `manage-clients` permission can exploit this vulnerability by injecting a hardcoded role mapper into any client. This action allows the user to bypass existing scope restrictions and inject the `realm-admin` role into generated tokens, resulting in privilege escalation and full administrative access to the realm.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Affected products
Red Hat · Red Hat build of Keycloak 26.4Red Hat · Red Hat build of Keycloak 26.4.14Red Hat · Red Hat build of Keycloak 26.6.5Related CVEs — Red Hat build of Keycloak 26.4
In the same product, most dangerous first.
CVE-2026-18963CRITICALKeycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypassEPSS 4.7%CVE-2026-7307HIGHKeycloak: keycloak: denial of service via specially crafted saml inputEPSS 0.9%CVE-2026-74909HIGHKeycloak-services: keycloak-services: incomplete fix for cve-2026-15573 allows policy enforcer bypass via percent-encoded uri segmentsEPSS 0.8%CVE-2026-7507HIGHOrg.keycloak/keycloak-services: session fixation in oidc login flow that can lead to account takeoverEPSS 0.8%CVE-2026-79651HIGHKeycloak-services: keycloak-services: unauthenticated dos via unbounded locale cachingEPSS 0.8%CVE-2026-9086HIGHKeycloak: keycloak: cross-site scripting (xss) via case-insensitive uri validation bypassEPSS 0.8%