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TI-2020-01687 Aliases CVE-2020-1744GHSA-4gf2-xv97-63m2

Improper handling of exceptional conditions in Red Hat keycloak

Priority LOW 27CWE-755Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Partial Red Hat: 6 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-200.

Summary

A flaw was found in keycloak before version 9.0.1. When configuring an Conditional OTP Authentication Flow as a post login flow of an IDP, the failure login events for OTP are not being sent to the brute force protection event queue. So BruteForceProtector does not handle this events.

Why it matters now

EPSS 0.0112 66th percentileScored 2026-11-07
Fix Partial org.keycloak:keycloak-core (Maven): 9.0.1Red Hat: 6 advisoriesRed Hat: 6 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red Hatkeycloakbefore 9.0.19.0.1Patch availableCNA
—org.keycloak:keycloak-core (Maven)before 9.0.19.0.1Patch availableGHSA-4gf2-xv97-63m2
  • keycloak VendorRed Hat Affected before 9.0.1 Fixed in 9.0.1 Patch available CNA
  • org.keycloak:keycloak-core (Maven) Vendor— Affected before 9.0.1 Fixed in 9.0.1 Patch available GHSA-4gf2-xv97-63m2

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*before 9.0.1VulnerableRed Hat
  • cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* Versions before 9.0.1 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-4gf2-xv97-63m2 org.keycloak:keycloak-core (Maven) Fixed in 9.0.1 Advisory →

Red Hat 6 advisories

  • RHSA-2020:2905 Released 2020-07-23 · Red Hat rating Important
    Red Hat build of Thorntail 2.7.0 security and bug fix update
    • Text-Only RHOAR
  • RHSA-2020:2252 Released 2020-06-01 · Red Hat rating Important
    Red Hat support for Spring Boot 2.2.6 security and bug fix update
    • Red Hat Runtimes Spring Boot 2.2.6
  • RHSA-2020:0951 Released 2020-03-23 · Red Hat rating Important
    Red Hat Single Sign-On 7.3.7 security update
    • Red Hat Single Sign-On 7.3
Show 3 more Red Hat advisories
  • RHSA-2020:0945 Released 2020-03-23 · Red Hat rating Important
    Red Hat Single Sign-On 7.3.7 security update on RHEL 6
    • Red Hat Single Sign-On 7.3 for RHEL 6 Server rh-sso7-keycloak-4.8.18-1.Final_redhat_00001.1.el6sso, rh-sso7-keycloak-server-4.8.18-1.Final_redhat_00001.1.el6sso
  • RHSA-2020:0947 Released 2020-03-23 · Red Hat rating Important
    Red Hat Single Sign-On 7.3.7 security update on RHEL 8
    • Red Hat Single Sign-On 7.3 for RHEL 8 rh-sso7-keycloak-4.8.18-1.Final_redhat_00001.1.el8sso, rh-sso7-keycloak-server-4.8.18-1.Final_redhat_00001.1.el8sso
  • RHSA-2020:0946 Released 2020-03-23 · Red Hat rating Important
    Red Hat Single Sign-On 7.3.7 security update on RHEL 7
    • Red Hat Single Sign-On 7.3 for RHEL 7 Server rh-sso7-keycloak-4.8.18-1.Final_redhat_00001.1.el7sso, rh-sso7-keycloak-server-4.8.18-1.Final_redhat_00001.1.el7sso

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat OpenShift Application RuntimesAffectedNo fix yet
Red Hat support for Spring BootAffectedNo fix yet
Red Hat Runtimes Spring Boot 2.2.6Fixed RHSA-2020:2252
Red Hat Single Sign-On 7.3Fixed RHSA-2020:0951
Red Hat Single Sign-On 7.3 for RHEL 6 ServerFixed RHSA-2020:0945
Red Hat Single Sign-On 7.3 for RHEL 7 ServerFixed RHSA-2020:0946
Red Hat Single Sign-On 7.3 for RHEL 8Fixed RHSA-2020:0947
Text-Only RHOARFixed RHSA-2020:2905
Not affected: 1 product
  • Red Hat Fuse 7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-1744
  2. 2026-10-03 Alias added: GHSA-4gf2-xv97-63m2

References

Advisory 3

Other 1

  • 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