CVE-2026-16102
CVE CVE-2026-16102EUVD EUVD-2026-53382Published 2026-08-05T13:50:50.000ZLast changed 2026-08-05T18:11:59.000ZCVSS 8.1
What the advisory describes
A flaw was found in the Dynamic Client Registration (DCR) component of Keycloak, an identity and access management solution. The default DCR policy fails to properly validate the claim path for User Property mappers, allowing them to write values to sensitive internal claim locations. An attacker with a standard user account and a limited Initial Access Token can exploit this to forge administrative roles in their access token. This allows the attacker to take over other clients, steal confidential secrets, and potentially gain full administrative control over the realm.
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: 26.4.14-1; patch: 26.4-22
- Red Hat — Red Hat build of Keycloak 26.6 patch: 26.6.5-1; patch: 26.6-11
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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