CVE-2026-40214

MEDIUM EPSS 10.8%

Published May 7, 20261mo ago · Modified Jun 17, 20262w ago

6.3 CVSS 3.1

Medium

Published May 7, 2026 1mo ago

Last Modified Jun 17, 2026 2w ago

Description

In OpenStack Cyborg before 16.0.1, the Accelerator Request (ARQ) API does not enforce project ownership at any layer. The project_id column in the database is never populated (NULL for every ARQ), database queries have no project filtering, and policy checks are self-referential (the authorize_wsgi decorator compares the caller's project_id with itself rather than the target resource). Any authenticated non-admin user can complete various actions such as deleting ARQs bound to other projects' instances, aka cross-tenant denial of service.

CVSS Details

Base Score

6.3

Exploitability

2.8

Impact

3.4

Vector string

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality Low

Integrity Low

Availability Low

Threat Intelligence

EPSS Exploit Probability

10.8% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-282

References 3

bugs.launchpad.net https://bugs.launchpad.net/openstack-cyborg/+bug/2144056
security.openstack.org https://security.openstack.org/ossa/OSSA-2026-011.html
openwall.com https://www.openwall.com/lists/oss-security/2026/05/07/6

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.