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CVE-2026-40213 high CVSS 7.4

Authorization Flaw in openstack-cyborg (CVE-2026-40213)

Summary

Vulnerability in openstack-cyborg (CVE-2026-40213). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 16.0.1 or later.

Original description

The description as published by the source.

OpenStack Cyborg before 16.0.1 uses rule:allow (check_str='@') as the default policy for multiple API endpoints. This unconditionally authorizes any request carrying a valid Keystone token regardless of roles, project membership, or scope. An authenticated user with zero role assignments can complete various actions such as reprogramming FPGA bitstreams on arbitrary compute nodes via agent RPC.

Source: NIST National Vulnerability Database NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-40213 has been found in openstack-cyborg.
Risk of unauthorized operations or information disclosure. CVSS score: 7.4/10.
What to do: upgrade openstack-cyborg to 16.0.1 or later.
If unsure, ask your IT team or search "openstack-cyborg CVE-2026-40213" on the vendor's site.

CVE-2026-40213 (openstack-cyborg) — CWE-863 / CVSS v3 7.4
Attack vector: remote (network-reachable) / no user interaction
Patched: 16.0.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

Incorrect authorization (CWE-863) exists in openstack-cyborg.

📍 Affected scope

Check the vendor advisory for the affected versions of openstack-cyborg.

🔥 Severity

Severity: High (CVSS 7.4/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 16.0.1.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'openstack-cyborg' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'openstack-cyborg' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で openstack-cyborg を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade openstack-cyborg to 16.0.1

    ステージング環境で 16.0.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

pip openstack-cyborg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.0.1"}]}]
PyPI openstack-cyborg
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"16.0.1"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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