CVE-2020-1723: A flaw was found in Keycloak Gatekeeper (Louketo)

This month

MEDIUM 6.1WATCHLISTDOWNGRADEDOWNGRADE

CVE-2020-1723 is a medium-severity flaw (CVSS 6.1) affecting keycloak gatekeeper, mobile application platform. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A flaw was found in Keycloak Gatekeeper (Louketo). The logout endpoint can be abused to redirect logged-in users to arbitrary web pages. Affected versions of Keycloak Gatekeeper (Louketo): 6.0.1, 7.0.0

Why this priority

On your watchlist

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-601
Published	2021-01-28
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: keycloak gatekeeper project · redhat

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-01-28 20:15 UTCPublished CVE record published
2026-06-17 03:02 UTCUpdated Record last modified

keycloak gatekeeper project keycloak gatekeeper DOWNGRADE

Affected: 6.0.1 · 7.0.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.0.1

1. Check installed version

apt-cache policy keycloak-gatekeeper || rpm -q keycloak-gatekeeper || keycloak-gatekeeper --version

2. No fixed release: DOWNGRADE to a release before 6.0.1 (Debian / Ubuntu)

apt-cache madison keycloak-gatekeeper sudo apt install keycloak-gatekeeper=<VERSION_BEFORE_6.0.1> sudo apt-mark hold keycloak-gatekeeper

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list keycloak-gatekeeper sudo dnf downgrade keycloak-gatekeeper-<VERSION_BEFORE_6.0.1> sudo dnf versionlock add keycloak-gatekeeper

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

redhat mobile application platform DOWNGRADE

Affected: 4.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0

1. Check installed version

apt-cache policy mobile-application-platform || rpm -q mobile-application-platform || mobile-application-platform --version

2. No fixed release: DOWNGRADE to a release before 4.0 (Debian / Ubuntu)

apt-cache madison mobile-application-platform sudo apt install mobile-application-platform=<VERSION_BEFORE_4.0> sudo apt-mark hold mobile-application-platform

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mobile-application-platform sudo dnf downgrade mobile-application-platform-<VERSION_BEFORE_4.0> sudo dnf versionlock add mobile-application-platform

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-1723?

keycloak gatekeeper: downgrade or apply the listed mitigation; mobile application platform: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-1723 being exploited?

CVE-2020-1723 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-1723 affect?

CVE-2020-1723 affects keycloak gatekeeper, mobile application platform. Severity is medium (CVSS 6.1). A flaw was found in Keycloak Gatekeeper (Louketo). The logout endpoint can be abused to redirect logged-in users to arbitrary web pages. Affected versions of Keycloak Gatekeeper (Louketo): 6.0.1, 7.0.0

How urgent is CVE-2020-1723?

Priority 42/100. On your watchlist

Software pages

Keycloak vulnerabilities

References

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