CVE-2026-88770
Medium
Description
A flaw was found in the Device Authorization Grant flow of Keycloak, an identity and access management solution. The issue occurs because the token redemption process fails to check if a user account is currently locked due to brute-force protection. If an attacker has an active session for a locked account, they can complete the device login process and receive new security tokens. This allows the attacker to maintain access to the account even when it should be temporarily disabled to prevent unauthorized entry.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Red Hat Build of Keycloak
PublishedSep 10, 2026
First seenSep 10, 2026
Weakness typeCWE-307CWE-307
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Red Hat Build of Keycloak | No range specified | — |
| Red Hat Red Hat Single Sign-On 7 | No range specified | — |
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