CVE-2026-9800

EUVD-2026-39471
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 28.48%
Affected Products (NVD)
VendorProductVersion
redhatbuild_of_keycloak
26.4 ≤
𝑥
< 26.4.13
redhatbuild_of_keycloak
26.6 ≤
𝑥
≤ 26.6.4
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
Red HatRed Hat build of Keycloak 26.4
26.4.13-1 ≤
𝑥
< *
ADP
Red HatRed Hat build of Keycloak 26.4
26.4.14-1 ≤
𝑥
< *
ADP
Red HatRed Hat build of Keycloak 26.4
26.4-19 ≤
𝑥
< *
ADP
Red HatRed Hat build of Keycloak 26.4
26.4-22 ≤
𝑥
< *
ADP
Red HatRed Hat build of Keycloak 26.4
26.4-19 ≤
𝑥
< *
ADP
Red HatRed Hat build of Keycloak 26.4
26.4-22 ≤
𝑥
< *
ADP
Red HatRed Hat build of Keycloak 26.6
26.6.4-2 ≤
𝑥
< *
ADP
Red HatRed Hat build of Keycloak 26.6
26.6-8 ≤
𝑥
< *
ADP
Red HatRed Hat build of Keycloak 26.6
26.6-8 ≤
𝑥
< *
ADP