CVE-2026-71195

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{"acknowledgement": "Red Hat would like to thank Chen YuXiang (Institute of Computing Technology) for reporting this issue.", "bugzilla": {"description": "manila: manila: Public Manila Share Allows Cross-Project Access-Rule and Export-Metadata Writes", "id": "2547840", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2547840"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-639", "details": ["In OpenStack Manila before 23.0.1, multiple Manila API operations on public shares do not verify that the caller owns the share. The API controllers authorize operations against the caller's own project context, then load a foreign public share without re-authorizing against the share's actual owner. This affects the following operations: allow_access: grant data-plane read/write access to another tenant's share; deny_access: revoke the owner's existing access rules; update_access: escalate access level (e.g., ro to rw); create_share_backup: exfiltrate share data via a backup created under the attacker's project; soft_delete: move a foreign share to the recycle bin; restore: interfere with the owner's deletion workflow; export location metadata: create, update, and delete metadata on foreign export locations; access rule listing: disclose IPs, usernames, and CephFS keys. Any authenticated project member can exploit these operations on any public share. The share UUID is visible since the share is public.", "A flaw was found in OpenStack Manila. When a file share is configured with public visibility, the service fails to verify project ownership before authorizing management operations. An authenticated user in a separate project can exploit this issue by submitting modification requests for public shares they do not own. This can lead to unauthorized data access or a denial of service (DoS) by allowing unauthorized users to alter access permissions, manipulate export metadata, or delete the share."], "name": "CVE-2026-71195", "package_state": [{"cpe": "cpe:/a:redhat:openstack:13", "fix_state": "Affected", "package_name": "openstack-manila", "product_name": "Red Hat OpenStack Platform 13 (Queens)"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Affected", "package_name": "openstack-manila", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Affected", "package_name": "openstack-manila", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:18.0", "fix_state": "Affected", "package_name": "openstack-manila", "product_name": "Red Hat OpenStack Platform 18.0"}], "public_date": "2026-10-20T15:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-71195\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-71195\nhttps://launchpad.net/bugs/2161412"], "statement": "This vulnerability is rated as Critical for Red Hat OpenStack Platform because any authenticated tenant user can breach multi-tenant boundary isolation and manipulate shared storage resources belonging to different projects without requiring administrative privileges. Due to improper authorization verification in the Manila shared file system service, non-owner project members can alter access permissions, manipulate export metadata, generate replicas, or initiate soft deletion on shares configured with public visibility. Exploitation is limited to deployments where the Manila service is active and where at least one file share has been designated as public.", "threat_severity": "Critical"}

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