How severe is CVE-2020-14359?

CVE-2020-14359 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-14359 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14359?

CVE-2020-14359 affects Redhat Louketo Proxy. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-14359?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-14359 published?

CVE-2020-14359 was published on 2021-02-23 and last updated on 2026-06-17.

CVE-2020-14359

CVE-2020-14359 is a high-severity vulnerability in Redhat Louketo Proxy with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-305.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-305
Affected product: Redhat Louketo Proxy
Published: 2021-02-23
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2020-14359?: 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.
How severe is CVE-2020-14359?: CVE-2020-14359 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-14359 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14359?: CVE-2020-14359 affects Redhat Louketo Proxy. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-14359?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-14359 published?: CVE-2020-14359 was published on 2021-02-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:redhat:louketo_proxy:*:*:*:*:*:*:*:*

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