Read the docs
TI-2023-00101 Aliases CVE-2023-0105GHSA-c7xw-p58w-h6fj

Improper authentication in Red Hat Keycloak

Priority LOW 36CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-287.

Summary

A flaw was found in Keycloak. This flaw allows impersonation and lockout due to the email trust not being handled correctly in Keycloak. An attacker can shadow other users with the same email and lockout or impersonate them.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00719 54th percentileScored 2026-11-07
Fix Fixed org.keycloak:keycloak-core (Maven): 22.0.1Red Hat: 5 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatKeycloak——Not affectedCNA
—org.keycloak:keycloak-core (Maven)before 22.0.122.0.1Patch availableGHSA-c7xw-p58w-h6fj
  • Keycloak VendorRed Hat Affected — Fixed in — Not affected CNA
  • org.keycloak:keycloak-core (Maven) Vendor— Affected before 22.0.1 Fixed in 22.0.1 Patch available GHSA-c7xw-p58w-h6fj

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:*not specified by NVDVulnerableRed Hat
cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*7.0Running onRed Hat
  • cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:* Versions 7.0 Running on ·Red Hat

Remediation

  • Fix · GHSA-c7xw-p58w-h6fj org.keycloak:keycloak-core (Maven) Fixed in 22.0.1 Advisory →

Red Hat 5 advisories

  • RHSA-2023:7488 Released 2023-11-24 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.6 security update
    • Red Hat Single Sign-On 7
  • RHSA-2023:7484 Released 2023-11-24 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.6 security update on RHEL 9
    • Red Hat Single Sign-On 7.6 for RHEL 9 rh-sso7-keycloak-18.0.11-2.redhat_00001.1.el9sso, rh-sso7-keycloak-server-18.0.11-2.redhat_00001.1.el9sso
  • RHSA-2023:7483 Released 2023-11-24 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.6 security update on RHEL 8
    • Red Hat Single Sign-On 7.6 for RHEL 8 rh-sso7-keycloak-18.0.11-2.redhat_00001.1.el8sso, rh-sso7-keycloak-server-18.0.11-2.redhat_00001.1.el8sso
Show 2 more Red Hat advisories
  • RHSA-2023:7482 Released 2023-11-24 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.6 security update on RHEL 7
    • Red Hat Single Sign-On 7.6 for RHEL 7 Server rh-sso7-keycloak-18.0.11-2.redhat_00001.1.el7sso, rh-sso7-keycloak-server-18.0.11-2.redhat_00001.1.el7sso
  • RHSA-2023:7486 Released 2023-11-24 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.6 for OpenShift image enhancement and security update
    • Middleware Containers for OpenShift rh-sso-7/sso76-openshift-rhel8

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Middleware Containers for OpenShiftFixed RHSA-2023:7486
Red Hat Single Sign-On 7Fixed RHSA-2023:7488
Red Hat Single Sign-On 7.6 for RHEL 7 ServerFixed RHSA-2023:7482
Red Hat Single Sign-On 7.6 for RHEL 8Fixed RHSA-2023:7483
Red Hat Single Sign-On 7.6 for RHEL 9Fixed RHSA-2023:7484

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-0105
  2. 2026-10-03 Alias added: GHSA-c7xw-p58w-h6fj

References

Advisory 1

Other 4

  • TI-2024-01049 Keycloak: path transversal in redirection validation CVSS 3.1HIGH 8.1
  • TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
  • TI-2020-08665 Server-side request forgery in keycloak CVSS 3.1MEDIUM 5.3
  • TI-2022-03468 Path traversal in Red Hat Keycloak CVSS 3.1CRITICAL 9.1
  • TI-2021-03612 A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak. CVSS 3.1MEDIUM 6.1
  • TI-2022-03994 Cross-site scripting in keycloak CVSS 3.1CRITICAL 10.0
See all 97 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences