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Fencer Vulns
critical 9.1

CVE-2019-14837 json

keycloak vulnerable to unauthorized login via mail server setup

published 2020-01-07 6 y ago modified 2026-06-17 4 mo ago also GHSA-cf8f-w2c5-p5jr , EUVD-2022-3567

cvss
9.1
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

A flaw was found in keycloack before version 8.0.0. The owner of 'placeholder.org' domain can setup mail server on this domain and knowing only name of a client can reset password and then log in. For example, for client name 'test' the email address will be 'service-account-test@placeholder.org'.

Patch / fix

  • maven org.keycloak:keycloak-core 8.0.0
  • redhat keycloak 8.0.0
  • rh-sso7-keycloak red hat single sign on 7 4.8.15-1.Final_redhat_00001.1.el8sso
  • rh-sso7-keycloak-server red hat single sign on 7 4.8.15-1.Final_redhat_00001.1.el8sso
  • rh-sso7-keycloak red hat single sign on 7 4.8.15-1.Final_redhat_00001.1.el7sso
  • rh-sso7-keycloak-server red hat single sign on 7 4.8.15-1.Final_redhat_00001.1.el7sso
  • rh-sso7-keycloak red hat single sign on 7 4.8.15-1.Final_redhat_00001.1.el6sso
  • rh-sso7-keycloak-server red hat single sign on 7 4.8.15-1.Final_redhat_00001.1.el6sso

red hat advisories RHSA-2019:4042RHSA-2019:4041RHSA-2019:4040

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-2019-14837 updated cvss 9.1

keycloak: keycloak uses hardcoded open dummy domain for new accounts enabling information disclosure

  • Red Hat Single Sign-On 7.3
    fixed: vendor fix RHSA-2019:4045
  • Red Hat Single Sign-On 7.3 for RHEL 6 Server rh-sso7-keycloak 4.8.15-1.Final_redhat_00001.1.el6sso, rh-sso7-keycloak-server 4.8.15-1.Final_redhat_00001.1.el6sso
    fixed: vendor fix RHSA-2019:4040
  • Red Hat Single Sign-On 7.3 for RHEL 7 Server rh-sso7-keycloak 4.8.15-1.Final_redhat_00001.1.el7sso, rh-sso7-keycloak-server 4.8.15-1.Final_redhat_00001.1.el7sso
    fixed: vendor fix RHSA-2019:4041
  • Red Hat Single Sign-On 7.3 for RHEL 8 rh-sso7-keycloak 4.8.15-1.Final_redhat_00001.1.el8sso, rh-sso7-keycloak-server 4.8.15-1.Final_redhat_00001.1.el8sso
    fixed: vendor fix RHSA-2019:4042
  • Red Hat Fuse 7 keycloak keycloak Red Hat Mobile Application Platform 4 keycloak Red Hat OpenShift Application Runtimes 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

1.72% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14837 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:P/A:N
GitHub 3.0 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected packages

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

Affected products

  • Red Hat keycloak

Classification

Weakness
  • CWE-547 Use of Hard-coded, Security-relevant Constants
  • CWE-798 Use of Hard-coded Credentials

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.