CVE-2026-17526
High
Description
Keycloak is an open-source identity and access management solution. A vulnerability was discovered where a user with the impersonation role can impersonate a realm administrator. This allows the attacker to gain full administrative control over the realm, including the ability to manage users, clients, and roles.
SeverityHigh
CVSS7.2
Exploit probability—
ProductBuild Keycloak 26.4
PublishedSep 16, 2026
First seenSep 16, 2026
Weakness typeCWE-862Missing authorization
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| build_keycloak 26.4 | No range specified | — |
| build_keycloak 26.6 | No range specified | — |
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