CVE-2020-14359

HIGH
7.3
CVSS Score
Published: February 23, 2021 at 12:42 PM UTC
Updated: June 17, 2026 at 02:54 AM UTC
2 products affected across 2 vendorsLouketo ProxyKeycloak

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Severity
HIGH7.3
Exploit prediction
EPSS 0.9%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

x_refsource_MISCIssue TrackingVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1868591
x_refsource_MISCIssue TrackingPermissions RequiredThird Party Advisory
https://issues.jboss.org/browse/KEYCLOAK-14090

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-305

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