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CVE-2019-14837

keycloak vulnerable to unauthorized login via mail server setup

9.1 CriticalFix available

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 '[email protected]'.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

1.72%Up 0.9 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 9.1

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 '[email protected]'.

Record
CVE-2019-14837
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-547
Updated
2026-11-02
EUVDEUVD-2022-3567 9.1

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 '[email protected]'.

Record
EUVD-2022-3567
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-cf8f-w2c5-p5jr 9.1

keycloak vulnerable to unauthorized login via mail server setup

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 '[email protected]'.

Record
GHSA-cf8f-w2c5-p5jr
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-547, CWE-798
Updated
2026-11-02
NVD 9.1

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 '[email protected]'.

Record
CVE-2019-14837
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0
6.4 MediumAV:N/AC:L/Au:N/C:P/I:P/A:N
Weakness
CWE-547, CWE-798
Updated
2026-11-02
OSV 9.1

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 '[email protected]'.

Record
CVE-2019-14837
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVGHSA-cf8f-w2c5-p5jr 9.1

keycloak vulnerable to unauthorized login via mail server setup

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 '[email protected]'.

Record
GHSA-cf8f-w2c5-p5jr
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness
CWE-547, CWE-798
Updated
2026-11-02
OSVRHSA-2019:4040 9.1

Red Hat Security Advisory: Red Hat Single Sign-On 7.3.5 security update on RHEL 6

Record
RHSA-2019:4040
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVRHSA-2019:4041 9.1

Red Hat Security Advisory: Red Hat Single Sign-On 7.3.5 security update on RHEL 7

Record
RHSA-2019:4041
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02
OSVRHSA-2019:4042 9.1

Red Hat Security Advisory: Red Hat Single Sign-On 7.3.5 security update on RHEL 8

Record
RHSA-2019:4042
CVSS 3.0
9.1 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
org.keycloak:keycloak-core
Maven
 before 8.0.0
8.0.0
org.keycloak:keycloak-core
Maven
 before 8.0.0, plus listed versions
1.0-alpha-11.0-alpha-1-120620131.0-alpha-21.0-alpha-31.0-alpha-4
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1.0-beta-11.0-beta-1-201505211.0-beta-1-201505231.0-beta-21.0-beta-31.0-beta-41.0-final1.0-rc-11.0-rc-21.0.1.Final1.0.2.Final1.0.3.Final1.0.4.Final1.0.5.Final1.1.0.Beta11.1.0.Beta21.1.0.Final1.1.1.Final1.2.0.Beta11.2.0.CR11.2.0.Final1.3.0.Final1.3.1.Final1.4.0.Final1.5.0-Final1.5.0.Final1.5.1.Final1.6.0.Final1.6.1.Final1.7.0.CR11.7.0.Final1.8.0.Alpha11.8.0.CR11.8.0.CR21.8.0.CR31.8.0.Final1.8.1.Final1.9.0.CR11.9.0.Final1.9.1.Final1.9.2.Final1.9.3.Final1.9.4.Final1.9.5.Final1.9.7.Final
8.0.0
rh-sso7-keycloak
Red Hat:red_hat_single_sign_on:7::el6
 before 0:4.8.15-1.Final_redhat_00001.1.el6sso
0:4.8.15-1.Final_redhat_00001.1.el6sso
rh-sso7-keycloak-server
Red Hat:red_hat_single_sign_on:7::el6
 before 0:4.8.15-1.Final_redhat_00001.1.el6sso
0:4.8.15-1.Final_redhat_00001.1.el6sso
rh-sso7-keycloak
Red Hat:red_hat_single_sign_on:7::el7
 before 0:4.8.15-1.Final_redhat_00001.1.el7sso
0:4.8.15-1.Final_redhat_00001.1.el7sso
rh-sso7-keycloak-server
Red Hat:red_hat_single_sign_on:7::el7
 before 0:4.8.15-1.Final_redhat_00001.1.el7sso
0:4.8.15-1.Final_redhat_00001.1.el7sso
rh-sso7-keycloak
Red Hat:red_hat_single_sign_on:7::el8
 before 0:4.8.15-1.Final_redhat_00001.1.el8sso
0:4.8.15-1.Final_redhat_00001.1.el8sso
rh-sso7-keycloak-server
Red Hat:red_hat_single_sign_on:7::el8
 before 0:4.8.15-1.Final_redhat_00001.1.el8sso
0:4.8.15-1.Final_redhat_00001.1.el8sso

History

History
RecordedChangedSources
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-14837 is a critical vulnerability (CVSS 9.1) in Keycloak, published January 7, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.72%, the 77th percentile. Fixed in org.keycloak:keycloak-core 8.0.0.

References

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