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TI-2023-05639 Aliases CVE-2023-6134GHSA-cvg2-7c3j-g36j

Keycloak: reflected xss via wildcard in oidc redirect_uri

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-79.

Summary

A flaw was found in Keycloak that prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This issue could allow an attacker to submit a specially crafted request leading to cross-site scripting (XSS) or further attacks. This flaw is the result of an incomplete fix for CVE-2020-10748.

Why it matters now

EPSS 0.01318 71st percentileScored 2026-11-08
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed org.keycloak:keycloak-services (Maven): 23.0.3Red Hat: 12 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat build of Keycloak 22—22.0.7-1Patch availableCNA
Red HatRed Hat build of Keycloak 22—22-6Patch availableCNA
Red HatRed Hat build of Keycloak 22—22-9Patch availableCNA
Red HatRed Hat build of Keycloak 22.0.7——Not affectedCNA
Red HatRed Hat Single Sign-On 7——Not affectedCNA
Red HatRed Hat Single Sign-On 7.6 for RHEL 7—18.0.11-2.redhat_00003.1.el7ssoPatch availableCNA
Red HatRed Hat Single Sign-On 7.6 for RHEL 7—18.0.12-1.redhat_00001.1.el7ssoPatch availableCNA
Red HatRed Hat Single Sign-On 7.6 for RHEL 8—18.0.11-2.redhat_00003.1.el8ssoPatch availableCNA
Red HatRed Hat Single Sign-On 7.6 for RHEL 8—18.0.12-1.redhat_00001.1.el8ssoPatch availableCNA
Red HatRed Hat Single Sign-On 7.6 for RHEL 9—18.0.11-2.redhat_00003.1.el9ssoPatch availableCNA
Red HatRed Hat Single Sign-On 7.6 for RHEL 9—18.0.12-1.redhat_00001.1.el9ssoPatch availableCNA
Red HatRHEL-8 based Middleware Containers—7.6-38Patch availableCNA
Red HatRHEL-8 based Middleware Containers—7.6.6-2Patch availableCNA
Red HatRHEL-8 based Middleware Containers—7.6-41Patch availableCNA
Red HatSingle Sign-On 7.6.6——Not affectedCNA
—org.keycloak:keycloak-services (Maven)before 23.0.323.0.3Patch availableGHSA-cvg2-7c3j-g36j
  • Red Hat build of Keycloak 22 VendorRed Hat Affected — Fixed in 22.0.7-1 Patch available CNA
  • Red Hat build of Keycloak 22 VendorRed Hat Affected — Fixed in 22-6 Patch available CNA
  • Red Hat build of Keycloak 22 VendorRed Hat Affected — Fixed in 22-9 Patch available CNA
  • Red Hat build of Keycloak 22.0.7 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Single Sign-On 7 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Single Sign-On 7.6 for RHEL 7 VendorRed Hat Affected — Fixed in 18.0.11-2.redhat_00003.1.el7sso Patch available CNA
  • Red Hat Single Sign-On 7.6 for RHEL 7 VendorRed Hat Affected — Fixed in 18.0.12-1.redhat_00001.1.el7sso Patch available CNA
  • Red Hat Single Sign-On 7.6 for RHEL 8 VendorRed Hat Affected — Fixed in 18.0.11-2.redhat_00003.1.el8sso Patch available CNA
  • Red Hat Single Sign-On 7.6 for RHEL 8 VendorRed Hat Affected — Fixed in 18.0.12-1.redhat_00001.1.el8sso Patch available CNA
  • Red Hat Single Sign-On 7.6 for RHEL 9 VendorRed Hat Affected — Fixed in 18.0.11-2.redhat_00003.1.el9sso Patch available CNA
  • Red Hat Single Sign-On 7.6 for RHEL 9 VendorRed Hat Affected — Fixed in 18.0.12-1.redhat_00001.1.el9sso Patch available CNA
  • RHEL-8 based Middleware Containers VendorRed Hat Affected — Fixed in 7.6-38 Patch available CNA
  • RHEL-8 based Middleware Containers VendorRed Hat Affected — Fixed in 7.6.6-2 Patch available CNA
  • RHEL-8 based Middleware Containers VendorRed Hat Affected — Fixed in 7.6-41 Patch available CNA
  • Single Sign-On 7.6.6 VendorRed Hat Affected — Fixed in — Not affected CNA
  • org.keycloak:keycloak-services (Maven) Vendor— Affected before 23.0.3 Fixed in 23.0.3 Patch available GHSA-cvg2-7c3j-g36j

CPE configurations NVD · 12

CPEVersionsRoleVendor
cpe:2.3:a:redhat:single_sign-on:*:*:*:*:*:*:*:*before 7.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0Running onRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0Running onRed Hat
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*9.0Running onRed Hat
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*before 22.0.7VulnerableRed Hat
cpe:2.3:a:redhat:openshift_container_platform:4.11:*:*:*:*:*:*:*4.11VulnerableRed Hat
cpe:2.3:a:redhat:openshift_container_platform:4.12:*:*:*:*:*:*:*4.12VulnerableRed Hat
cpe:2.3:a:redhat:openshift_container_platform_for_power:4.9:*:*:*:*:*:*:*4.9VulnerableRed Hat
cpe:2.3:a:redhat:openshift_container_platform_for_power:4.10:*:*:*:*:*:*:*4.10VulnerableRed Hat
cpe:2.3:a:redhat:openshift_container_platform_ibm_z_systems:4.9:*:*:*:*:*:*:*4.9VulnerableRed Hat
  • cpe:2.3:a:redhat:single_sign-on:*:*:*:*:*:*:*:* Versions before 7.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Running on ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Running on ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Running on ·Red Hat
  • cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* Versions before 22.0.7 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_container_platform:4.11:*:*:*:*:*:*:* Versions 4.11 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_container_platform:4.12:*:*:*:*:*:*:* Versions 4.12 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_container_platform_for_power:4.9:*:*:*:*:*:*:* Versions 4.9 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_container_platform_for_power:4.10:*:*:*:*:*:*:* Versions 4.10 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:openshift_container_platform_ibm_z_systems:4.9:*:*:*:*:*:*:* Versions 4.9 Vulnerable ·Red Hat
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:redhat:openshift_container_platform_ibm_z_systems:4.10:*:*:*:*:*:*:*4.10VulnerableRed Hat
cpe:2.3:a:redhat:single_sign-on:-:*:*:*:text-only:*:*:*not specified by NVDVulnerableRed Hat
  • cpe:2.3:a:redhat:openshift_container_platform_ibm_z_systems:4.10:*:*:*:*:*:*:* Versions 4.10 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:single_sign-on:-:*:*:*:text-only:*:*:* Versions not specified by NVD Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-cvg2-7c3j-g36j org.keycloak:keycloak-services (Maven) Fixed in 23.0.3 Advisory →

Red Hat 12 advisories

  • RHSA-2024:0804 Released 2024-02-13 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.7 security update
    • Red Hat Single Sign-On 7
  • RHSA-2024:0798 Released 2024-02-13 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.7 security update on RHEL 7
    • Red Hat Single Sign-On 7.6 for RHEL 7 Server rh-sso7-keycloak-18.0.12-1.redhat_00001.1.el7sso, rh-sso7-keycloak-server-18.0.12-1.redhat_00001.1.el7sso
  • RHSA-2024:0800 Released 2024-02-13 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.7 security update on RHEL 9
    • Red Hat Single Sign-On 7.6 for RHEL 9 rh-sso7-keycloak-18.0.12-1.redhat_00001.1.el9sso, rh-sso7-keycloak-server-18.0.12-1.redhat_00001.1.el9sso
Show 9 more Red Hat advisories
  • RHSA-2024:0799 Released 2024-02-13 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.7 security update on RHEL 8
    • Red Hat Single Sign-On 7.6 for RHEL 8 rh-sso7-keycloak-18.0.12-1.redhat_00001.1.el8sso, rh-sso7-keycloak-server-18.0.12-1.redhat_00001.1.el8sso
  • RHSA-2024:0801 Released 2024-02-13 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.7 for OpenShift image enhancement update
    • Middleware Containers for OpenShift rh-sso-7/sso76-openshift-rhel8
  • RHSA-2023:7861 Released 2023-12-14 · Red Hat rating Important
    Red Hat build of Keycloak 22.0.7 images enhancement and security update
    • Red Hat build of Keycloak 22 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
  • RHSA-2023:7857 Released 2023-12-14 · 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/sso7-rhel8-operator-bundle, rh-sso-7/sso76-openshift-rhel8
  • RHSA-2023:7860 Released 2023-12-14 · Red Hat rating Important
    Red Hat build of Keycloak 22.0.7 enhancement and security update
    • Red Hat build of Keycloak 22.0.7
  • RHSA-2023:7858 Released 2023-12-14 · Red Hat rating Important
    Red Hat Single Sign-On 7.6.6 security update
    • Single Sign-On 7.6.6
  • RHSA-2023:7854 Released 2023-12-14 · 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_00003.1.el7sso, rh-sso7-keycloak-server-18.0.11-2.redhat_00003.1.el7sso
  • RHSA-2023:7856 Released 2023-12-14 · 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_00003.1.el8sso, rh-sso7-keycloak-server-18.0.11-2.redhat_00003.1.el8sso
  • RHSA-2023:7855 Released 2023-12-14 · 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_00003.1.el9sso, rh-sso7-keycloak-server-18.0.11-2.redhat_00003.1.el9sso

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Middleware Containers for OpenShiftFixed RHSA-2023:7857, RHSA-2024:0801
Red Hat Single Sign-On 7Fixed RHSA-2024:0804
Red Hat Single Sign-On 7.6 for RHEL 7 ServerFixed RHSA-2023:7854, RHSA-2024:0798
Red Hat Single Sign-On 7.6 for RHEL 8Fixed RHSA-2023:7856, RHSA-2024:0799
Red Hat Single Sign-On 7.6 for RHEL 9Fixed RHSA-2023:7855, RHSA-2024:0800
Red Hat build of Keycloak 22Fixed RHSA-2023:7861
Red Hat build of Keycloak 22.0.7Fixed RHSA-2023:7860
Single Sign-On 7.6.6Fixed RHSA-2023:7858

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-6134
  2. 2026-10-03 Alias added: GHSA-cvg2-7c3j-g36j

References

Exploit 1

Advisory 13

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