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TI-2021-03612 Aliases CVE-2021-20323GHSA-xpgc-j48j-jwv9

A POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.

Priority MEDIUM 54CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
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 POST based reflected Cross Site Scripting vulnerability on has been identified in Keycloak.

Why it matters now

EPSS 0.37246 98th percentileScored 2026-11-07
Fix Fixed org.keycloak:keycloak-core (Maven): 17.0.0Red Hat: 1 advisory

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
—keycloak-serviceskeycloak 17.0.0—No fix listedCNA
—org.keycloak:keycloak-core (Maven)15.0.0 to before 17.0.017.0.0Patch availableGHSA-xpgc-j48j-jwv9
  • keycloak-services Vendor— Affected keycloak 17.0.0 Fixed in — No fix listed CNA
  • org.keycloak:keycloak-core (Maven) Vendor— Affected 15.0.0 to before 17.0.0 Fixed in 17.0.0 Patch available GHSA-xpgc-j48j-jwv9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*before 17.0.0VulnerableRed Hat
  • cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* Versions before 17.0.0 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-xpgc-j48j-jwv9 org.keycloak:keycloak-core (Maven) Fixed in 17.0.0 Advisory →

Red Hat 1 advisory

  • RHSA-2022:0407 Released 2022-02-02 · Red Hat rating Important
    Red Hat Single Sign-On 7.5.1 security update
    • RHSSO 7.5.1

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
RHSSO 7.5.1Fixed RHSA-2022:0407

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20323
  2. 2026-10-03 Alias added: GHSA-xpgc-j48j-jwv9

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-2022-03994 Cross-site scripting in keycloak CVSS 3.1CRITICAL 10.0
  • TI-2020-16908 Improper authentication in keycloak CVSS 3.1MEDIUM 6.5
See all 97 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences