What’s Vulnerable › Vulnerabilities

CVE-2020-14359

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-23 · updated 2026-06-17
• Weakness: CWE-305

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 products

• RedHat Louketo Proxy: all versions

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1868591
• https://issues.jboss.org/browse/KEYCLOAK-14090
• https://bugzilla.redhat.com/show_bug.cgi?id=1868591
• https://issues.jboss.org/browse/KEYCLOAK-14090

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