CVE WatchJul 23, 2026

CVE-2026-8830

A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating c

CVSS

4.3

Medium

EPSS

0.4%

p32

KEV

—

Exploit Today

0-100

Published: May 19, 2026 · Last modified: Jul 23, 2026 · CWE-603

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-08-112026-09-07

Technical description

A flaw was found in Keycloak. An authenticated user can bypass configured WebAuthn policies during credential registration by manipulating client-side JavaScript. This occurs because the server-side processAction() fails to validate that the newly created credential's parameters, such as public key algorithms, match the realm's configured WebAuthn policies. This could lead to the creation of credentials that do not adhere to administrative security requirements, potentially weakening the overall security posture of the system by allowing non-compliant authentication methods.

Official references

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