Paper/Archive/CVE-2026-18963

CVE-2026-18963

Red Hat Red Hat build of Keycloak 26.4 — Keycloak-services: keycloak-services: unauthenticated account takeover via reset-credentials flow bypass

Description · from the CVE record

A flaw was found in the reset-credentials flow of the keycloak-services component, which is the core engine for identity and access management in Red Hat Build of Keycloak. The issue allows an unauthenticated attacker to force the password reset process for any user without needing to click the required email verification link. This can result in the attacker gaining full control over target user accounts by directly setting new credentials.

Affected

ProductAffectedFixed inSource
Red Hat build of Keycloak 26.4see advisory26.4.15-1CNA
Red Hat build of Keycloak 26.4see advisory26.4-23CNA
Red Hat build of Keycloak 26.4see advisory26.4-23CNA
Red Hat build of Keycloak 26.4.15see advisory–CNA
Red Hat build of Keycloak 26.4.15see advisory–CNA
Red Hat build of Keycloak 26.6see advisory26.6.6-1CNA
Red Hat build of Keycloak 26.6see advisory26.6-12CNA
Red Hat build of Keycloak 26.6see advisory26.6-12CNA
Red Hat build of Keycloak 26.6.6see advisory–CNA
Red Hat build of Keycloak 26.6.6see advisory–CNA
Red Hat build of Keycloak 26.6.6see advisory–CNA
Red Hat JBoss Enterprise Application Platform Expansion Packsee advisory–CNA

Scores by source

redhat (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisoryaccess.redhat.com/errata/RHSA-2026:56519advisoryaccess.redhat.com/errata/RHSA-2026:56520advisoryaccess.redhat.com/errata/RHSA-2026:56523advisoryaccess.redhat.com/errata/RHSA-2026:56524refaccess.redhat.com/security/cve/CVE-2026-18963refbugzilla.redhat.com/show_bug.cgi?id=2511595refcert-portal.siemens.com/productcert/html/ssa-503852.html