CVE-2026-0707
MEDIUM EPSS 28.0%
Published Jan 8, 20265mo ago · Modified Jun 17, 20261w ago
5.3 CVSS 3.1
Published Jan 8, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago
Description
A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the "Bearer" authentication scheme. It accepts non-standard characters (such as tabs) as separators and tolerates case variations that deviate from RFC 6750 specifications.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
28.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-551
References 5
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:3947
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:3948
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-0707
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2427768
- github.com https://github.com/keycloak/keycloak/issues/49433
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.