CVE-2026-16102High· 8.1▾ TwilightA 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 wri…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44.6 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 22.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
0.3% → 0.3%
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.
build_of_keycloak >= 26.4, < 26.4.14build_of_keycloak >= 26.6, < 26.6.5data_grid = 8.0jboss_enterprise_application_platform_expansion_packsingle_sign-on = 7.0Upgrade past the affected range:
build_of_keycloak 26.6.5Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-15573High· 8.1A flaw was found in Keycloak's Authorization Services
CVE-2026-9800High· 8.1A flaw was found in Keycloak Policy Enforcer
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