Privilege escalation via retained forged identity headers
Published Jan 19, 2026 · Updated Aug 26, 2026
Authentication bypass in OpenStack keystonemiddleware allows remote authenticated users to impersonate users or escalate privileges. The external_oauth2_token middleware conditionally replaces identity headers, leaving attacker-supplied values intact when an OAuth token lacks corresponding attributes. Exposure requires an authenticated request to a deployment using that middleware; forged role, user, or admin-project headers can then alter authorization decisions.
Summary
What happened
Authentication bypass in OpenStack keystonemiddleware allows remote authenticated users to impersonate users or escalate privileges. The external_oauth2_token middleware conditionally replaces identity headers, leaving attacker-supplied values intact when an OAuth token lacks corresponding attributes. Exposure requires an authenticated request to a deployment using that middleware; forged role, user, or admin-project headers can then alter authorization decisions.
The record
- CVE
- CVE-2026-22797
- Published
- Jan 19, 2026
- Updated
- Aug 26, 2026
- Vendor
- 389 Directory Server
- Product
- Red Hat OpenShift Container Platform 4.21
- Classifications
- CWE-290, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 19, 2026CVE publishedPublication date reported by the CVE source.
- Aug 26, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
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
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo