CVE-2026-43002: CWE-696 Incorrect Behavior Order in OpenStack Horizon
An issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3. There is a write operation to the session storage backend before authentication and thus storage can be exhausted by unauthenticated requests. This is a regression of the CVE-2014-8124 fix.
AI Analysis
Technical Summary
This vulnerability in OpenStack Horizon (versions 25.6 and 25.7 before 25.7.3) arises from an incorrect behavior order where session storage is written to before authentication is completed. This allows unauthenticated requests to perform write operations to the session storage backend, potentially exhausting storage resources. The issue is a regression of a prior fix for CVE-2014-8124. The CVSS 3.1 base score is 5.3, indicating medium severity with network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, and no impact on confidentiality or integrity but limited impact on availability.
Potential Impact
The vulnerability can lead to denial of service conditions by exhausting session storage resources through unauthenticated requests. There is no impact on confidentiality or integrity of data. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the OpenStack vendor advisory for current remediation guidance. Since no official patch or temporary fix is indicated, monitoring vendor communications for updates is recommended. Avoid relying on generic mitigations unless specifically advised by OpenStack.
CVE-2026-43002: CWE-696 Incorrect Behavior Order in OpenStack Horizon
Description
An issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3. There is a write operation to the session storage backend before authentication and thus storage can be exhausted by unauthenticated requests. This is a regression of the CVE-2014-8124 fix.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability in OpenStack Horizon (versions 25.6 and 25.7 before 25.7.3) arises from an incorrect behavior order where session storage is written to before authentication is completed. This allows unauthenticated requests to perform write operations to the session storage backend, potentially exhausting storage resources. The issue is a regression of a prior fix for CVE-2014-8124. The CVSS 3.1 base score is 5.3, indicating medium severity with network attack vector, low attack complexity, no privileges required, no user interaction, unchanged scope, and no impact on confidentiality or integrity but limited impact on availability.
Potential Impact
The vulnerability can lead to denial of service conditions by exhausting session storage resources through unauthenticated requests. There is no impact on confidentiality or integrity of data. No known active exploitation has been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the OpenStack vendor advisory for current remediation guidance. Since no official patch or temporary fix is indicated, monitoring vendor communications for updates is recommended. Avoid relying on generic mitigations unless specifically advised by OpenStack.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-05-01T00:00:00.000Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fa200ecbff5d861012a7be
Added to database: 5/5/2026, 4:51:26 PM
Last enriched: 5/5/2026, 4:51:54 PM
Last updated: 5/5/2026, 7:45:31 PM
Views: 4
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