🛡️ CVE-2026-40214 on Debian — cyborg

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2026-40214 as tracked by Debian, for the package cyborg. The fix is available in version 16.0.0+git+2026.04.26.b8edfa06f1-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

Weakness class

DEBIAN-CVE-2026-40214 is classified as CWE-282: Improper Ownership Management. The product assigns the wrong ownership, or does not properly verify the ownership, of an object or resource.

Affected software

DEBIAN-CVE-2026-40214 is recorded against 1 package.

  • cyborg (fixed in 16.0.0+git+2026.04.26.b8edfa06f1-1)

Timeline and source

Published on 7 May 2026 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2026-40214 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-05-07
Updated 2026-08-20
Modified 2026-08-04
Fix URL N/A

Affected Packages

Software From version Fixed in
cyborg — 16.0.0+git+2026.04.26.b8edfa06f1-1

Similar Threats

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