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TI-2023-06330 Aliases CVE-2023-6927GHSA-9vm7-v8wj-3fqw

Keycloak: open redirect via "form_post.jwt" jarm response mode

Priority LOW 29CWE-601Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Spoofing
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-601.

Summary

A flaw was found in Keycloak. This issue may allow an attacker to steal authorization codes or tokens from clients using a wildcard in the JARM response mode "form_post.jwt" which could be used to bypass the security patch implemented to address CVE-2023-6134.

Why it matters now

EPSS 0.01109 66th percentileScored 2026-11-07
Fix Fixed org.keycloak:keycloak-core (Maven): 23.0.4Red 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—22-7Patch availableCNA
Red HatRed Hat build of Keycloak 22.0.8——Not affectedCNA
Red HatRed Hat Single Sign-On 7——Not affectedCNA
Red HatRed Hat Single Sign-On 7.6 for RHEL 7—18.0.11-3.redhat_00001.1.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—18.0.11-3.redhat_00001.1.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—18.0.11-3.redhat_00001.1.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—7.6-39Patch availableCNA
Red HatRHEL-8 based Middleware Containers—7.6-41Patch availableCNA
Red HatSingle Sign-On 7.6.6——Not affectedCNA
—org.keycloak:keycloak-core (Maven)before 23.0.423.0.4Patch availableGHSA-9vm7-v8wj-3fqw
  • Red Hat build of Keycloak 22 VendorRed Hat Affected — Fixed in 22-7 Patch available CNA
  • Red Hat build of Keycloak 22.0.8 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 18.0.11-3.redhat_00001.1.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 18.0.11-3.redhat_00001.1.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 18.0.11-3.redhat_00001.1.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 7.6-39 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-core (Maven) Vendor— Affected before 23.0.4 Fixed in 23.0.4 Patch available GHSA-9vm7-v8wj-3fqw

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:*:*:*:*:*:*:*7.0VulnerableRed 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 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-9vm7-v8wj-3fqw org.keycloak:keycloak-core (Maven) Fixed in 23.0.4 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-2024:0100 Released 2024-01-09 · Red Hat rating Moderate
    Red Hat build of Keycloak 22.0.8 images enhancement and security update
    • Red Hat build of Keycloak 22 rhbk/keycloak-rhel9
  • RHSA-2024:0097 Released 2024-01-09 · Red Hat rating Moderate
    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
  • RHSA-2024:0101 Released 2024-01-09 · Red Hat rating Moderate
    Red Hat build of Keycloak 22.0.8 enhancement and security update
    • Red Hat build of Keycloak 22.0.8
  • RHSA-2024:0096 Released 2024-01-09 · Red Hat rating Moderate
    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-18.0.11-3.redhat_00001.1.el9sso, rh-sso7-keycloak-server-18.0.11-3.redhat_00001.1.el9sso
  • RHSA-2024:0094 Released 2024-01-09 · Red Hat rating Moderate
    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-18.0.11-3.redhat_00001.1.el7sso, rh-sso7-keycloak-server-18.0.11-3.redhat_00001.1.el7sso
  • RHSA-2024:0095 Released 2024-01-09 · Red Hat rating Moderate
    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-18.0.11-3.redhat_00001.1.el8sso, rh-sso7-keycloak-server-18.0.11-3.redhat_00001.1.el8sso
  • RHSA-2024:0098 Released 2024-01-09 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.6.6 security update
    • Single Sign-On 7.6.6

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Middleware Containers for OpenShiftFixed RHSA-2024:0097, RHSA-2024:0801
Red Hat Single Sign-On 7Fixed RHSA-2024:0804
Red Hat Single Sign-On 7.6 for RHEL 7 ServerFixed RHSA-2024:0094, RHSA-2024:0798
Red Hat Single Sign-On 7.6 for RHEL 8Fixed RHSA-2024:0095, RHSA-2024:0799
Red Hat Single Sign-On 7.6 for RHEL 9Fixed RHSA-2024:0096, RHSA-2024:0800
Red Hat build of Keycloak 22Fixed RHSA-2024:0100
Red Hat build of Keycloak 22.0.8Fixed RHSA-2024:0101
Single Sign-On 7.6.6Fixed RHSA-2024:0098
Not affected: 2 products
  • Middleware Containers for OpenShift
  • Red Hat build of Keycloak 22

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-6927
  2. 2026-10-03 Alias added: GHSA-9vm7-v8wj-3fqw

References

Advisory 15

Other 2

  • 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