Keycloak: Missing Role Enforcement on UMA 2.0 Permission Ticket Endpoint Leads to Information Disclosure

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS

• CVE-2026-3190: 0.33% estimated exploitation activity in the next 30 days; percentile 25.62 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

A flaw was found in Keycloak. The User-Managed Access (UMA) 2.0 Protection API endpoint for permission tickets fails to enforce the umaprotection role check. This allows any authenticated user with a token issued for a resource server client, even without the umaprotection role, to enumerate all permission tickets in the system. This vulnerability partial leads to information disclosure.

Published by the source

26 Mar 2026, 21:31 UTC

Last modified by the source

2 Apr 2026, 15:32 UTC

Source last checked

26 Oct 2026, 16:45 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-q35r-vvhv-vx5h

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# Patch Next advisory brief: CVE-2026-3190

Advisory: Keycloak: Missing Role Enforcement on UMA 2.0 Permission Ticket Endpoint Leads to Information Disclosure
IDs: CVE-2026-3190, GHSA-q35r-vvhv-vx5h
Record: https://patchnext.com/advisories/cve-2026-3190 (revision 1, source checked 26 Oct 2026, 16:45 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.keycloak:keycloak-server-spi-private 26.5.6; org.keycloak:keycloak-services 26.5.6; org.keycloak:keycloak-model-jpa 26.5.6. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.keycloak:keycloak-server-spi-private: affected < 26.5.6; fixed in 26.5.6
- Maven org.keycloak:keycloak-services: affected < 26.5.6; fixed in 26.5.6
- Maven org.keycloak:keycloak-model-jpa: affected < 26.5.6; fixed in 26.5.6

## Suggested inspection (read-only)
- Maven org.keycloak:keycloak-server-spi-private: check the installed version with your package manager.
- Maven org.keycloak:keycloak-services: check the installed version with your package manager.
- Maven org.keycloak:keycloak-model-jpa: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.keycloak:keycloak-server-spi-private, org.keycloak:keycloak-services, org.keycloak:keycloak-model-jpa.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-q35r-vvhv-vx5h (GitHub-reviewed advisory GHSA-q35r-vvhv-vx5h lists affected ranges: Maven org.keycloak:keycloak-server-spi-private >=0 =0 =0 <26.5.6)

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