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TI-2026-28105 Aliases CVE-2026-37980GHSA-m32f-8vh9-2hh3

Cross-site scripting in Red Hat build of Keycloak 26.4.12

Priority LOW 30CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · Low · None
Fix status
Partial Red Hat: 1 fixed, 1 without a fix

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

Summary

A flaw was found in Keycloak, specifically in the organization selection login page. A remote attacker with `manage-realm` or `manage-organizations` administrative privileges can exploit a Stored Cross-Site Scripting (XSS) vulnerability. This flaw occurs because the `organization.alias` is placed into an inline JavaScript `onclick` handler, allowing a crafted JavaScript payload to execute in a user's browser when they view the login page. Successful exploitation enables arbitrary JavaScript execution, potentially leading to session theft, unauthorized account actions, or further attacks against users of the affected realm.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00355 29th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat build of Keycloak 26.4.12——Not affectedCNA
Red HatRed Hat Build of Keycloak——No fix listedCNA
—org.keycloak:keycloak-services (Maven)up to 26.5.5—No fix listedGHSA-m32f-8vh9-2hh3
  • Red Hat build of Keycloak 26.4.12 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat Build of Keycloak VendorRed Hat Affected — Fixed in — No fix listed CNA
  • org.keycloak:keycloak-services (Maven) Vendor— Affected up to 26.5.5 Fixed in — No fix listed GHSA-m32f-8vh9-2hh3

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:*not specified by NVDVulnerableRed Hat
  • cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:* Versions not specified by NVD Vulnerable ·Red Hat

Remediation

Red Hat 1 advisory

  • RHSA-2026:19596 Released 2026-05-20 · Red Hat rating Important
    Red Hat build of Keycloak 26.4.12 Security Update
    • Red Hat build of Keycloak 26.4.12

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Build of KeycloakAffectedNo fix yet
Red Hat build of Keycloak 26.4.12Fixed RHSA-2026:19596

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-37980
  2. 2026-10-03 Alias added: GHSA-m32f-8vh9-2hh3
  3. 2026-10-22 1 new reference · GHSA-m32f-8vh9-2hh3
  4. 2026-10-23 Affected versions changed · CNA
  5. 2026-10-23 1 new reference · CNA
  6. 2026-10-23 Fix available: RHSA-2026:19596 · Red Hat
  7. 2026-10-23 Fix available: Red Hat build of Keycloak 26.4.12 · Red Hat

References

Advisory 4

Other 2

  • TI-2026-02223 Keycloak: keycloak: unauthorized authentication via disabled saml identity provider CVSS 3.1HIGH 8.1
  • TI-2024-01049 Keycloak: path transversal in redirection validation CVSS 3.1HIGH 8.1
  • TI-2026-13740 Keycloak-services: keycloak-services: saml idp-initiated broker login bypasses link-only restriction CVSS 3.1CRITICAL 9.8
  • TI-2026-13741 Keycloak-services: keycloak-services: saml broker metadata import disables response signature validation CVSS 3.1CRITICAL 9.1
  • TI-2026-13106 Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation CVSS 3.1HIGH 8.8
  • TI-2026-02631 Authentication bypass in Red Hat build of Keycloak 26.2 CVSS 3.1HIGH 8.8
See all 110 →

Sources

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