GHSA-gv94-wp4h-vv8p
Keycloak has Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
At a glance
- Published
- Updated
- CVE
- CVE-2026-0707
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
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.
Affected packages
| Package | Versions |
|---|---|
| Maven · org.keycloak:keycloak-parent | introduced 0, last affected 26.5.0 |
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
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |