Authenticated authorization bypass via substring URI comparison
Published Jun 25, 2026 · Updated Jun 25, 2026
Authorization bypass in Red Hat build of Keycloak allows remote authenticated users to access Policy Enforcer-protected resources. The Policy Enforcer compares each request URI with the configured access-denied page path and exempts any URI containing that path, including a path segment or query value. Any authenticated account can therefore skip role, scope, and UMA permission checks and read or modify resources permitted by the targeted application.
Summary
What happened
Authorization bypass in Red Hat build of Keycloak allows remote authenticated users to access Policy Enforcer-protected resources. The Policy Enforcer compares each request URI with the configured access-denied page path and exempts any URI containing that path, including a path segment or query value. Any authenticated account can therefore skip role, scope, and UMA permission checks and read or modify resources permitted by the targeted application.
The record
- CVE
- CVE-2026-9800
- Published
- Jun 25, 2026
- Updated
- Jun 25, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat build of Keycloak
- Classifications
- CWE-1025, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 25, 2026CVE publishedPublication date reported by the CVE source.
- Jun 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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