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TI-2026-08587 Aliases CVE-2026-9799GHSA-gfv4-4vr2-rr4gGHSA-w3p3-7cjg-vgfw

Keycloak: keycloak: unauthorized access to resources via uma permission ticket bypass

Priority LOW 21CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-639.

Summary

A flaw was found in org.keycloak.authorization. An authenticated user with a granted User-Managed Access (UMA) permission ticket for one resource can exploit this by using a specific permission request prefix to bypass per-resource access control. This allows the user to gain unauthorized access to all resources of that type within the same resource server, even if they do not have a ticket for those specific resources. This vulnerability requires the resource server to be configured in PERMISSIVE policy enforcement mode and affects typed resources with ownerManagedAccess enabled, where no explicit policy protects the resource type. The primary consequence is unauthorized information disclosure or modification of resources.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00294 22nd percentileScored 2026-11-07
Fix Fixed org.keycloak:keycloak-services (Maven): 26.6.4Red Hat: 4 advisories

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—26.4.13-1Patch availableCNA
Red HatRed Hat build of Keycloak 26.4—26.4-19Patch availableCNA
Red HatRed Hat build of Keycloak 26.4—26.4-19Patch availableCNA
Red HatRed Hat build of Keycloak 26.4.13——Not affectedCNA
Red HatRed Hat build of Keycloak 26.6—26.6.4-2Patch availableCNA
Red HatRed Hat build of Keycloak 26.6—26.6-8Patch availableCNA
Red HatRed Hat build of Keycloak 26.6—26.6-8Patch availableCNA
Red HatRed Hat build of Keycloak 26.6.4——Not affectedCNA
—org.keycloak:keycloak-services (Maven)before 26.6.426.6.4Patch availableGHSA-w3p3-7cjg-vgfw
  • Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4.13-1 Patch available CNA
  • Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4-19 Patch available CNA
  • Red Hat build of Keycloak 26.4 VendorRed Hat Affected — Fixed in 26.4-19 Patch available CNA
  • Red Hat build of Keycloak 26.4.13 VendorRed Hat Affected — Fixed in — Not affected CNA
  • Red Hat build of Keycloak 26.6 VendorRed Hat Affected — Fixed in 26.6.4-2 Patch available CNA
  • Red Hat build of Keycloak 26.6 VendorRed Hat Affected — Fixed in 26.6-8 Patch available CNA
  • Red Hat build of Keycloak 26.6 VendorRed Hat Affected — Fixed in 26.6-8 Patch available CNA
  • Red Hat build of Keycloak 26.6.4 VendorRed Hat Affected — Fixed in — Not affected CNA
  • org.keycloak:keycloak-services (Maven) Vendor— Affected before 26.6.4 Fixed in 26.6.4 Patch available GHSA-w3p3-7cjg-vgfw

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:*26.4 to before 26.4.13; 26.6 to before 26.6.4VulnerableRed Hat
  • cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:*:*:*:* Versions 26.4 to before 26.4.13; 26.6 to before 26.6.4 Vulnerable ·Red Hat

Remediation

  • Fix · GHSA-w3p3-7cjg-vgfw org.keycloak:keycloak-services (Maven) Fixed in 26.6.4 Advisory →

Red Hat 4 advisories

  • RHSA-2026:30084 Released 2026-06-25 · Red Hat rating Important
    Red Hat build of Keycloak 26.6.4 Images Security Update
    • Red Hat build of Keycloak 26.6 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
  • RHSA-2026:30083 Released 2026-06-25 · Red Hat rating Important
    Red Hat build of Keycloak 26.6.4 Security Update
    • Red Hat build of Keycloak 26.6.4
  • RHSA-2026:30050 Released 2026-06-25 · Red Hat rating Important
    Red Hat build of Keycloak 26.4.13 Images Security Update
    • Red Hat build of Keycloak 26.4 rhbk/keycloak-operator-bundle, rhbk/keycloak-rhel9, rhbk/keycloak-rhel9-operator
Show 1 more Red Hat advisories
  • RHSA-2026:30049 Released 2026-06-25 · Red Hat rating Important
    Red Hat build of Keycloak 26.4.13 Security Update
    • Red Hat build of Keycloak 26.4.13

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat build of Keycloak 26.4Fixed RHSA-2026:30050
Red Hat build of Keycloak 26.4.13Fixed RHSA-2026:30049
Red Hat build of Keycloak 26.6Fixed RHSA-2026:30084
Red Hat build of Keycloak 26.6.4Fixed RHSA-2026:30083

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9799
  2. 2026-10-03 Alias added: GHSA-gfv4-4vr2-rr4g
  3. 2026-10-29 Alias added: GHSA-w3p3-7cjg-vgfw
  4. 2026-10-29 Fix available: Maven/org.keycloak:[email protected] · GHSA-w3p3-7cjg-vgfw
  5. 2026-10-29 CVSS score added · GHSA-w3p3-7cjg-vgfw
  6. 2026-10-29 Weakness changed · GHSA-w3p3-7cjg-vgfw
  7. 2026-10-29 9 new references · GHSA-w3p3-7cjg-vgfw

References

Advisory 7

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