CVE-2026-0707

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.

Risk Information

Base Score

5.3

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS Score

Exploitation Probability

0.029

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2026-0707 are affected in Keycloak - keycloak-parent 26.5.0	Windows
Vulnerabilities CVE-2026-0707 are affected in Keycloak - keycloak-parent for Linux 26.5.0	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234