CVE-2026-19607
CVE CVE-2026-19607EUVD EUVD-2026-80855Published 2026-09-16T15:46:43.000ZLast changed 2026-09-16T18:35:08.000ZCVSS 5.3
What the advisory describes
A flaw was found in the first-broker-login flow of the keycloak-services component. This component handles the initial authentication and account linking when a user logs in via an external identity provider. The issue allows an attacker to register a matching username on an external provider to trigger a collision in Keycloak, which results in the legitimate user being locked out of their account.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Red Hat — Red Hat build of Keycloak 26.4 patch: 26.4-26; patch: 26.4.16-2
- Red Hat — Red Hat build of Keycloak 26.6 patch: 26.6.7-3; patch: 26.6-20
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Red Hat — Red Hat build of Keycloak
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