CVE-2026-40213: CWE-863 Incorrect Authorization in OpenStack Cyborg
CVE-2026-40213 is a high-severity vulnerability in OpenStack Cyborg versions before 16. 0. 1. The issue arises because multiple API endpoints use a default policy that authorizes any request with a valid Keystone token without verifying roles, project membership, or scope. This allows an authenticated user with no assigned roles to perform privileged actions such as reprogramming FPGA bitstreams on arbitrary compute nodes. The vulnerability has a CVSS score of 7. 4, indicating significant impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently confirmed.
AI Analysis
Technical Summary
OpenStack Cyborg prior to version 16.0.1 uses a default policy rule ('rule:allow' with check_str='@') that unconditionally authorizes any request carrying a valid Keystone token, regardless of the user's roles, project membership, or scope. This incorrect authorization (CWE-863) enables authenticated users without any role assignments to execute sensitive operations, including reprogramming FPGA bitstreams on arbitrary compute nodes via agent RPC. The vulnerability affects versions 5.0.0, 15.0.0, and 16.0.0 and has a CVSS 3.1 score of 7.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L).
Potential Impact
An attacker with any valid Keystone token but no assigned roles can perform unauthorized privileged actions on OpenStack Cyborg, such as reprogramming FPGA bitstreams on compute nodes. This compromises confidentiality, integrity, and availability of the affected system components. The vulnerability allows scope and role bypass leading to potential system manipulation.
Mitigation Recommendations
Patch status is not yet confirmed — check the OpenStack vendor advisory for current remediation guidance. Until an official fix is released, restrict access to Keystone tokens and limit exposure of the Cyborg API endpoints to trusted users only. Monitor for updates from OpenStack regarding patches or configuration changes to address this authorization flaw.
CVE-2026-40213: CWE-863 Incorrect Authorization in OpenStack Cyborg
Description
CVE-2026-40213 is a high-severity vulnerability in OpenStack Cyborg versions before 16. 0. 1. The issue arises because multiple API endpoints use a default policy that authorizes any request with a valid Keystone token without verifying roles, project membership, or scope. This allows an authenticated user with no assigned roles to perform privileged actions such as reprogramming FPGA bitstreams on arbitrary compute nodes. The vulnerability has a CVSS score of 7. 4, indicating significant impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently confirmed.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenStack Cyborg prior to version 16.0.1 uses a default policy rule ('rule:allow' with check_str='@') that unconditionally authorizes any request carrying a valid Keystone token, regardless of the user's roles, project membership, or scope. This incorrect authorization (CWE-863) enables authenticated users without any role assignments to execute sensitive operations, including reprogramming FPGA bitstreams on arbitrary compute nodes via agent RPC. The vulnerability affects versions 5.0.0, 15.0.0, and 16.0.0 and has a CVSS 3.1 score of 7.4 (AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L).
Potential Impact
An attacker with any valid Keystone token but no assigned roles can perform unauthorized privileged actions on OpenStack Cyborg, such as reprogramming FPGA bitstreams on compute nodes. This compromises confidentiality, integrity, and availability of the affected system components. The vulnerability allows scope and role bypass leading to potential system manipulation.
Mitigation Recommendations
Patch status is not yet confirmed — check the OpenStack vendor advisory for current remediation guidance. Until an official fix is released, restrict access to Keystone tokens and limit exposure of the Cyborg API endpoints to trusted users only. Monitor for updates from OpenStack regarding patches or configuration changes to address this authorization flaw.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-04-10T00:00:00.000Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fd0cdfcbff5d86103e42d6
Added to database: 5/7/2026, 10:06:23 PM
Last enriched: 5/7/2026, 10:21:21 PM
Last updated: 5/7/2026, 11:14:44 PM
Views: 5
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.