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Fencer Vulns
medium 4.3

CVE-2019-14820 json

Exposure of Sensitive Information to an Unauthorized Actor in Keycloak

published 2020-01-08 6 y ago modified 2026-06-17 4 mo ago also GHSA-xfqh-7356-vqjj , EUVD-2020-0398

cvss
4.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

It was found that keycloak before version 8.0.0 exposes internal adapter endpoints in org.keycloak.constants.AdapterConstants, which can be invoked via a specially-crafted URL. This vulnerability could allow an attacker to access unauthorized information.

Patch / fix

  • maven org.keycloak:keycloak-core 8.0.0
  • redhat keycloak 8.0.0
  • rh-sso7-keycloak red hat single sign on 7 4.8.13-1.Final_redhat_00001.1.el8sso
  • rh-sso7-keycloak-server red hat single sign on 7 4.8.13-1.Final_redhat_00001.1.el8sso
  • rh-sso7-keycloak red hat single sign on 7 4.8.13-1.Final_redhat_00001.1.el7sso
  • rh-sso7-keycloak-server red hat single sign on 7 4.8.13-1.Final_redhat_00001.1.el7sso
  • rh-sso7-libunix-dbus-java red hat single sign on 7 0.8.0-2.el7sso
  • rh-sso7-keycloak red hat single sign on 7 4.8.13-1.Final_redhat_00001.1.el6sso
  • rh-sso7-keycloak-server red hat single sign on 7 4.8.13-1.Final_redhat_00001.1.el6sso
  • eap7-keycloak-adapter-sso7_3 jboss enterprise application platform 7.2 4.8.13-1.Final_redhat_00001.1.el6eap

red hat advisories RHSA-2019:3046RHSA-2019:3045RHSA-2019:3044RHSA-2019:3049RHSA-2019:3048

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-14820 updated cvss 4.3

keycloak: adapter endpoints are exposed via arbitrary URLs

  • Red Hat Mobile Application Platform 4 keycloak Red Hat OpenShift Application Runtimes keycloak keycloak
    affected: no fix planned “Out of support scope”
  • Red Hat JBoss EAP 7.2 for RHEL 6 Server eap7-keycloak-adapter-sso7_3 4.8.13-1.Final_redhat_00001.1.el6eap, eap7-keycloak-saml-adapter-sso7_3 4.8.13-1.Final_redhat_00001.1.el6eap Red Hat JBoss EAP 7.2 for RHEL 7 Server eap7-keycloak-adapter-sso7_3 4.8.13-1.Final_redhat_00001.1.el7eap, eap7-keycloak-saml-adapter-sso7_3 4.8.13-1.Final_redhat_00001.1.el7eap Red Hat JBoss EAP 7.2 for RHEL 8 eap7-keycloak-adapter-sso7_3 4.8.13-1.Final_redhat_00001.1.el8eap, eap7-keycloak-saml-adapter-sso7_3 4.8.13-1.Final_redhat_00001.1.el8eap
    fixed: vendor fix RHSA-2019:3049
  • Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 6 Server keycloak-adapter-sso7_3-eap6 4.8.13-1.Final_redhat_00001.1.ep6.el6, keycloak-saml-adapter-sso7_3-eap6 4.8.13-1.Final_redhat_00001.1.ep6.el6 Red Hat JBoss Enterprise Application Platform 6.4 for RHEL 7 Server keycloak-adapter-sso7_3-eap6 4.8.13-1.Final_redhat_00001.1.ep6.el7, keycloak-saml-adapter-sso7_3-eap6 4.8.13-1.Final_redhat_00001.1.ep6.el7
    fixed: vendor fix RHSA-2019:3048
  • Red Hat Single Sign-On 7.3 for RHEL 6 Server rh-sso7-keycloak 4.8.13-1.Final_redhat_00001.1.el6sso, rh-sso7-keycloak-server 4.8.13-1.Final_redhat_00001.1.el6sso
    fixed: vendor fix RHSA-2019:3044
  • Red Hat Single Sign-On 7.3 for RHEL 7 Server rh-sso7-libunix-dbus-java 0.8.0-2.el7sso, rh-sso7-keycloak 4.8.13-1.Final_redhat_00001.1.el7sso, rh-sso7-keycloak-server 4.8.13-1.Final_redhat_00001.1.el7sso
    fixed: vendor fix RHSA-2019:3045
  • Red Hat Single Sign-On 7.3 for RHEL 8 rh-sso7-keycloak 4.8.13-1.Final_redhat_00001.1.el8sso, rh-sso7-keycloak-server 4.8.13-1.Final_redhat_00001.1.el8sso
    fixed: vendor fix RHSA-2019:3046
  • Red Hat Single Sign-On 7.3.4 zip
    fixed: vendor fix RHSA-2019:3050
  • Red Hat Text-Only RHOAR
    fixed: vendor fix RHSA-2020:2067
show 1 more
  • Red Hat Fuse 7 keycloak keycloak
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 4.3 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:P/I:N/A:N
GitHub 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.keycloak:keycloak-core
<8.0.0
8.0.0

Affected products

  • keycloak keycloak

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.