Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
☕
☕ Maven
Not in CISA KEV
MEDIUM severity

Keycloak allows unauthorized access to resources via uma permission ticket bypassGHSA-w3p3-7cjg-vgfw

MEDIUM

GHSA-w3p3-7cjg-vgfw is a medium-severity (CVSS 4.6) CWE-639 vulnerability in org.keycloak:keycloak-services. A fix is available for org.keycloak:keycloak-services — see the affected versions and patch details below.

Also known asBIT-keycloak-2026-9799CVE-2026-9799
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-w3p3-7cjg-vgfw.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs22th percentile — riskier than 22% of all scored CVEsHighest risk
0.00%0.26%0.53%0.79%0.2%0.2%0.3%0.3%0.3%Jul 26Sep 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-w3p3-7cjg-vgfw by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 397,508 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
☕org.keycloak:keycloak-services

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Description

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.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.keycloak:keycloak-servicesall versions26.6.4org.keycloak:keycloak-services:26.6.4

Affected Products

1 product · 2 configurations
Application
build of keycloakredhat
≥ 26.6 && < 26.6.4
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.keycloak:keycloak-services, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.keycloak:keycloak-services to 26.6.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-w3p3-7cjg-vgfw is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatModerate

A Medium severity flaw exists in Keycloak's authorization component where a user with a UMA permission ticket for a specific resource type can gain unauthorized access to all resources of that type. This bypass occurs when the resource server is configured with the non-default PERMISSIVE policy enforcement mode, has…

Workaround published by Red Hat
To mitigate this issue, ensure that the Keycloak client's policy enforcement mode is set to ENFORCING instead of PERMISSIVE. The PERMISSIVE mode is a non-default configuration that enables the vulnerability. Changing this setting will prevent the unauthorized access to resources of the same type. Consult Keycloak documentation for specific instructions on configuring policy enforcement mode for your client. This change may require a restart or reload of the Keycloak service to take effect and could impact existing authorization policies if not carefully managed.
Source: Red Hat security advisory for GHSA-w3p3-7cjg-vgfw (CC BY 4.0)
ProductFixed inAdvisory
Red Hat build of Keycloak 26.4rhbk/keycloak-operator-bundle:26.4.13-1RHSA-2026:30050
Red Hat build of Keycloak 26.4.13rhbk/keycloak-rhel9RHSA-2026:30049
Red Hat build of Keycloak 26.6rhbk/keycloak-operator-bundle:26.6.4-2RHSA-2026:30084
Red Hat build of Keycloak 26.6.4rhbk/keycloak-rhel9RHSA-2026:30083

Frequently Asked Questions

### Description 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 enabl
O3 Security · Impact-Aware SCA

Is GHSA-w3p3-7cjg-vgfw in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works
Keycloak allows unauthorized access to resources via…