VULNERABILITY INTELLIGENCE

CVE-2020-14359

CVSS score7.3 HIGH

EPSS probability0.93%

CISA KEVNot currently listed

Published2021-02-23

Last modified2026-06-17

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

Description

A vulnerability was found in all versions of Keycloak Gatekeeper, where on using lower case HTTP headers (via cURL) an attacker can bypass our Gatekeeper. Lower case headers are also accepted by some webservers (e.g. Jetty). This means there is no protection when we put a Gatekeeper in front of a Jetty server and use lowercase headers.

Weakness classification

secalert@redhat.com: CWE-305

Primary references

secalert@redhat.com — Issue Tracking, Vendor Advisory
secalert@redhat.com — Issue Tracking, Permissions Required, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Permissions Required, Third Party Advisory