Is CVE-2026-9799 actively exploited?

No active exploitation of CVE-2026-9799 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-9799 be exploited remotely?

Yes. CVE-2026-9799 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-9799?

CVE-2026-9799 has a CVSS score of 4.6 (MEDIUM).

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MEDIUM

CVE-2026-9799

CWE-639Published: June 25, 2026· Updated: Jul 1, 2026

4.6

CVSS v3.1

EPSS:0.18%probability of exploitation in 30 daysPercentile:7.2th

Official 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.

NVD Source

Technical Analysis

CVE-2026-9799 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.