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CVE-2026-22797

keystonemiddleware · Vulnerability

CVSS 3.1 9.9 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-22797

Published

An issue was discovered in OpenStack keystonemiddleware 10.5 through 10.7 before 10.7.2, 10.8 and 10.9 before 10.9.1, and 10.10 through 10.12 before 10.12.1. The external_oauth2_token middleware fails to sanitize incoming authentication headers before processing OAuth 2.0 tokens. By sending forged identity headers such as X-Is-Admin-Project, X-Roles, or X-User-Id, an authenticated attacker may escalate privileges or impersonate other users. All deployments using the external_oauth2_token middleware are affected.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-22797

Published

keystonemiddleware

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "defaultStatus": "unaffected",
                    "product": "keystonemiddleware",
                    "vendor": "OpenStack",
                    "versions": [
                        {
                            "lessThan": "10.7.2",
                            "status": "affected",
                            "version": "10.5.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "10.9.1",
                            "status": "affected",
                            "version": "10.8.0",
                            "versionType": "semver"
                        },
                        {
                            "lessThan": "10.12.1",
                            "status": "affected",
                            "version": "10.10.0",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON