# CVE-2026-0707

## Summary

- **CVE ID:** CVE-2026-0707
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
- **CWE:** CWE-551
- **Published:** Jan 8, 2026
- **Last Modified:** Jun 8, 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.

## Affected Products

- Red Hat — Red Hat build of Keycloak 26.4 (26.4.10-1)
- Red Hat — Red Hat build of Keycloak 26.4 (26.4-12)

## References

- [CNA](https://access.redhat.com/security/cve/CVE-2026-0707)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2427768)
- [CNA](https://access.redhat.com/errata/RHSA-2026:3947)
- [CNA](https://access.redhat.com/errata/RHSA-2026:3948)
- [CNA](https://github.com/keycloak/keycloak/issues/49433)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.41%
- **EPSS Percentile:** 34.8

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._