CVE-2026-43002 - Vulnerability Details - OpenCVE

ReportizFlow

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable yes

Technical Impact partial

Vendors	Products
Openstack	Horizon

No data.

No data.

References

Link	Providers
https://bugs.launchpad.net/horizon/+bug/2150331
https://www.openwall.com/lists/oss-security/2026/05/05/7

History

Tue, 05 May 2026 19:15:00 +0000

Type	Values Removed	Values Added
Title		OpenStack Horizon Session Storage Exhaustion Vulnerability

Tue, 05 May 2026 18:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 05 May 2026 17:00:00 +0000

Type	Values Removed	Values Added
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.
First Time appeared		Openstack Openstack horizon
Weaknesses		CWE-696
CPEs		cpe:2.3:a:openstack:horizon::::::::
Vendors & Products		Openstack Openstack horizon
References		https://bugs.launchpad.net/horizon/+bug/2150331 https://www.openwall.com/lists/oss-security/2026/05/05/7
Metrics		cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-05-05T00:00:00.000Z

Updated: 2026-05-05T17:26:59.504Z

Reserved: 2026-05-01T00:00:00.000Z

Link: CVE-2026-43002

Vulnrichment

Updated: 2026-05-05T17:26:49.397Z

NVD

Status : Received

Published: 2026-05-05T17:17:04.920

Modified: 2026-05-05T18:16:02.737

Link: CVE-2026-43002

Redhat

No data.

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