Cyber Resilience

CVE-2026-9800

High

Published: 25 June 2026

Published
25 June 2026
Modified
30 June 2026
KEV Added
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Patch
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CVSS Score v3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.0030 21.8th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-9800 is a high-severity Comparison Using Wrong Factors (CWE-1025) vulnerability in Redhat (inferred from references). Its CVSS base score is 8.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 21.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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…

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as a path segment or a query parameter, an attacker can gain unauthorized access to protected resources.

CWE(s)
CWE-1025

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Authz bypass in Keycloak Policy Enforcer directly enables privilege escalation (T1068) for authenticated users and exploitation of a public-facing access-control application (T1190).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

Affected Assets

Redhat
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References