CVE-2026-0707

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CVSS 3.1

5.3 medium

EPSS

<1%p34

Published

Jan 8, 2026 (Jan 8, 2026)

Modified

Jun 17, 2026

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.

Weakness: CWE-551
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.4%)

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