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TI-2019-02878 Aliases CVE-2019-3868GHSA-gc52-xj6p-9pxp

Information disclosure in Red Hat keycloak

Priority LOW 20CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 6 fixed, 4 without a fix

Attack profile from CVSS 3.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-200.

Summary

Keycloak up to version 6.0.0 allows the end user token (access or id token JWT) to be used as the session cookie for browser sessions for OIDC. As a result an attacker with access to service provider backend could hijack user’s browser session.

Why it matters now

EPSS 0.01005 63rd percentileScored 2026-11-07
Fix Partial org.keycloak:keycloak-core (Maven): 6.0.0Red Hat: 6 advisoriesRed Hat: 6 fixed, 4 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Red Hatkeycloakaffects up to 6.0.0 version—No fix listedCNA
—org.keycloak:keycloak-core (Maven)before 6.0.06.0.0Patch availableGHSA-gc52-xj6p-9pxp
  • keycloak VendorRed Hat Affected affects up to 6.0.0 version Fixed in — No fix listed CNA
  • org.keycloak:keycloak-core (Maven) Vendor— Affected before 6.0.0 Fixed in 6.0.0 Patch available GHSA-gc52-xj6p-9pxp

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*up to 6.0.0VulnerableRed Hat
  • cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* Versions up to 6.0.0 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-gc52-xj6p-9pxp org.keycloak:keycloak-core (Maven) Fixed in 6.0.0 Advisory →

Red Hat 6 advisories

  • RHSA-2020:2366 Released 2020-06-04 · Red Hat rating Important
    Red Hat support for Spring Boot 2.1.12 security and bug fix update
    • Red Hat Runtimes Spring Boot 2.1.12
  • RHSA-2019:2998 Released 2019-10-10 · Red Hat rating Important
    Red Hat OpenShift Application Runtimes Thorntail 2.5.0 security & bug fix update
    • Text-Only RHOAR
  • RHSA-2019:1140 Released 2019-05-09 · Red Hat rating Important
    Red Hat Single Sign-On 7.3.1 security update
    • Red Hat Single Sign-On 7.3.1 zip
Show 3 more Red Hat advisories
  • RHSA-2019:0868 Released 2019-04-23 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.2.7 security update
    • Red Hat Single Sign-On 7.2.7 zip
  • RHSA-2019:0857 Released 2019-04-23 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.2.7 security update on RHEL 6
    • Red Hat Single Sign-On 7.2 for RHEL 6 Server rh-sso7-keycloak-3.4.17-1.Final_redhat_00001.1.jbcs.el6, rh-sso7-keycloak-server-3.4.17-1.Final_redhat_00001.1.jbcs.el6
  • RHSA-2019:0856 Released 2019-04-23 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.2.7 security update on RHEL 7
    • Red Hat Single Sign-On 7.2 for RHEL 7 Server rh-sso7-keycloak-3.4.17-1.Final_redhat_00001.1.jbcs.el7, rh-sso7-keycloak-server-3.4.17-1.Final_redhat_00001.1.jbcs.el7

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Fuse 7AffectedNo fix planned: Will not fix
Red Hat Mobile Application Platform 4AffectedNo fix planned: Out of support scope
Red Hat OpenShift Application RuntimesAffectedNo fix yet
Red Hat support for Spring BootAffectedNo fix yet
Red Hat Runtimes Spring Boot 2.1.12Fixed RHSA-2020:2366
Red Hat Single Sign-On 7.2 for RHEL 6 ServerFixed RHSA-2019:0857
Red Hat Single Sign-On 7.2 for RHEL 7 ServerFixed RHSA-2019:0856
Red Hat Single Sign-On 7.2.7 zipFixed RHSA-2019:0868
Red Hat Single Sign-On 7.3.1 zipFixed RHSA-2019:1140
Text-Only RHOARFixed RHSA-2019:2998
Not affected: 1 product
  • streams for Apache Kafka

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-3868
  2. 2026-10-03 Alias added: GHSA-gc52-xj6p-9pxp

References

Advisory 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