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TI-2020-08671 Aliases CVE-2020-10776GHSA-484q-784p-8m5h

Cross-site scripting in keycloak

Priority LOW 23CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
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 before version 12.0.0, where it is possible to add unsafe schemes for the redirect_uri parameter. This flaw allows an attacker to perform a Cross-site scripting attack.

Why it matters now

EPSS 0.00778 56th percentileScored 2026-11-07
Fix Fixed org.keycloak:keycloak-server-spi-private (Maven): 12.0.0org.keycloak:keycloak-services (Maven): 12.0.0Red Hat: 4 advisories

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—keycloakbefore version 12.0.0—No fix listedCNA
—org.keycloak:keycloak-server-spi-private (Maven)before 12.0.012.0.0Patch availableGHSA-484q-784p-8m5h
—org.keycloak:keycloak-services (Maven)before 12.0.012.0.0Patch availableGHSA-484q-784p-8m5h
  • keycloak Vendor— Affected before version 12.0.0 Fixed in — No fix listed CNA
  • org.keycloak:keycloak-server-spi-private (Maven) Vendor— Affected before 12.0.0 Fixed in 12.0.0 Patch available GHSA-484q-784p-8m5h
  • org.keycloak:keycloak-services (Maven) Vendor— Affected before 12.0.0 Fixed in 12.0.0 Patch available GHSA-484q-784p-8m5h

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*before 12.0.0VulnerableRed Hat
  • cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* Versions before 12.0.0 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-484q-784p-8m5h org.keycloak:keycloak-server-spi-private (Maven) Fixed in 12.0.0 Advisory →
  • Fix · GHSA-484q-784p-8m5h org.keycloak:keycloak-services (Maven) Fixed in 12.0.0 Advisory →

Red Hat 4 advisories

  • RHSA-2020:4932 Released 2020-11-04 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.4.3 security update on RHEL 8
    • Red Hat Single Sign-On 7.4 for RHEL 8 rh-sso7-keycloak-9.0.9-1.redhat_00001.1.el8sso, rh-sso7-keycloak-server-9.0.9-1.redhat_00001.1.el8sso, rh-sso7-libunix-dbus-java-0.8.0-2.el8sso +1
  • RHSA-2020:4929 Released 2020-11-04 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.4.3 security update on RHEL 6
    • Red Hat Single Sign-On 7.4 for RHEL 6 Server rh-sso7-keycloak-9.0.9-1.redhat_00001.1.el6sso, rh-sso7-keycloak-server-9.0.9-1.redhat_00001.1.el6sso
  • RHSA-2020:4930 Released 2020-11-04 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.4.3 security update on RHEL 7
    • Red Hat Single Sign-On 7.4 for RHEL 7 Server rh-sso7-keycloak-9.0.9-1.redhat_00001.1.el7sso, rh-sso7-keycloak-server-9.0.9-1.redhat_00001.1.el7sso
Show 1 more Red Hat advisories
  • RHSA-2020:4931 Released 2020-11-04 · Red Hat rating Moderate
    Red Hat Single Sign-On 7.4.3 security update
    • Red Hat Single Sign-On 7.4.3

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Single Sign-On 7.4 for RHEL 6 ServerFixed RHSA-2020:4929
Red Hat Single Sign-On 7.4 for RHEL 7 ServerFixed RHSA-2020:4930
Red Hat Single Sign-On 7.4 for RHEL 8Fixed RHSA-2020:4932
Red Hat Single Sign-On 7.4.3Fixed RHSA-2020:4931
Not affected: 5 products
  • Red Hat Decision Manager 7
  • Red Hat Fuse 7
  • Red Hat OpenShift Application Runtimes
  • Red Hat Process Automation 7
  • Red Hat support for Spring Boot

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-10776
  2. 2026-10-03 Alias added: GHSA-484q-784p-8m5h

References

Advisory 2

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