CVE-2026-8830
MEDIUM EPSS 31.0%
Published May 19, 20261mo ago · Modified Jun 17, 20261w ago
4.3 CVSS 3.1
Published May 19, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
31.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-603
Affected Products 1
| Vendor | Product | Version | Range |
|---|---|---|---|
| redhat | build_of_keycloak | * | any |
References 4
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:25097
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:25098
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-8830
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2479565
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.