GitHub Advisoryadvisory · Maven
GHSA-gv94-wp4h-vv8p Keycloak has Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
MEDIUM
Official page ↗
- Aliases
- CVE-2026-0707
- Ecosystem
- Maven
- Packages
- org.keycloak:keycloak-parent
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weaknesses
- CWE-551
- Reviewed
- 2026-01-08
Affected packages
• Maven org.keycloak:keycloak-parent: <= 26.5.0 (no fix yet)
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.
Related
Alias · CVE (1)
- CVE-2026-0707 A flaw was found in Keycloak. vulnerability
Weakness · CWE (1)
- CWE-551 Incorrect Behavior Order: Authorization Before Parsing and Canonicalization weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-0707 advisory
- https://github.com/keycloak/keycloak/issues/49433 web
- https://access.redhat.com/errata/RHSA-2026:3947 web
- https://access.redhat.com/errata/RHSA-2026:3948 web
- https://access.redhat.com/security/cve/CVE-2026-0707 web
- https://bugzilla.redhat.com/show_bug.cgi?id=2427768 web
- https://github.com/keycloak/keycloak package