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CVE-2020-14366: A vulnerability was found in keycloak, where path traversal using URL-encoded path segments in the request is

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MEDIUM 6.8REMOTEWATCHLISTUPGRADE

CVE-2020-14366 is a medium-severity flaw (CVSS 6.8) affecting keycloak. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was found in keycloak, where path traversal using URL-encoded path segments in the request is possible because the resources endpoint applies a transformation of the url path to the file path. Only few specific folder hierarchies can be exposed by this flaw

Why this priority

  • Remotely exploitable, no login, no user action
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score6.8 (Medium)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionNone
EPSS exploit chance1.4% (top 28%)
CISA exploited listNo
WeaknessCWE-22
Published2020-11-09
Last modified2026-06-17
Publisher (CNA): Red Hat, Inc. · Vendor: redhat

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

Am I affected?

Timeline

redhat keycloak UPGRADE
Affected: < 12.0.0
Fixed in: 12.0.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy keycloak || rpm -q keycloak || keycloak --version
2. UPGRADE to 12.0.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade keycloak
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade keycloak
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2020-14366?

keycloak: upgrade to 12.0.0. Exact commands for each OS are on this page.

Is CVE-2020-14366 being exploited?

CVE-2020-14366 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-2020-14366 affect?

CVE-2020-14366 affects keycloak. Severity is medium (CVSS 6.8). A vulnerability was found in keycloak, where path traversal using URL-encoded path segments in the request is possible because the resources endpoint applies a transformation of the url path to the file path. Only few specific folder hierar

How urgent is CVE-2020-14366?

Priority 52/100. Remotely exploitable, no login, no user action; On your watchlist

Software pages

Keycloak vulnerabilities

Related CVEs

References

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