High severity · published Jun 25, 2026
CVE-2026-9800
Keycloak-policy-enforcer: keycloak policy enforcer: authorization bypass via incorrect uri comparison
8.1
CVSS
0.7%
EPSS
No
On KEV
Description
A flaw was found in Keycloak Policy Enforcer. This vulnerability allows any authenticated user to bypass all authorization policies, including role, scope, and User-Managed Access (UMA) permission checks. By including the configured access-denied page path within a request URL, either as a path segment or a query parameter, an attacker can gain unauthorized access to protected resources.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Single Sign-On 7 · Red Hat
All versions, or not specified · source: vendor, CISA
RH
Red Hat build of Keycloak 26.4 · Red Hat
All versions, or not specified · source: vendor, CISA
RH
Red Hat build of Keycloak 26.6 · Red Hat
All versions, or not specified · source: vendor, CISA
RH
Red Hat build of Quarkus · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Quarkus 3.27.4.SP2 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Quarkus 3.33.2.SP2 · Red Hat
All versions, or not specified · source: vendor
BO
Build OF Keycloak · Redhat
26.4 before 26.4.13; 26.6 through 26.6.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9800
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9800
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:30049
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:30050
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:30083
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:30084
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:36002
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:36013
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