CVE-2026-0707: Keycloak: keycloak authorization header parsing leading to potential security control bypass
Red Hat · Red Hat build of Keycloak 26.4
Vendor fix available · Affected: Red Hat build of Keycloak 26.4 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 35% of scored CVEs
DescriptionCVE.org
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 products4
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Red Hat · Red Hat build of Keycloak 26.4Versions not stated
- Red Hat · Red Hat build of Keycloak 26.4Versions not stated
- Red Hat · Red Hat build of Keycloak 26.4Versions not stated
- Red Hat · Red Hat build of Keycloak 26.4.10Versions not stated
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Incorrect Behavior Order: Authorization Before Parsing and Canonicalization · Access Control
- Vendor
- Red Hat
- Published
- January 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-0707 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.