TI-2026-31182 Aliases CVE-2026-43002 GHSA-vxvf-xvm3-p8j5

An issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3.

MEDIUM 63CWE-696Published 2026-05-05 · Updated 2026-05-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · None · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0036 29th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Horizon (OpenStack): 25.7.3horizon (PyPI): 25.7.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OpenStack	Horizon	25.6.0 to before 25.7.3	25.7.3	Patch available	CNA
—	horizon (PyPI)	25.6 to before 25.7.3	25.7.3	Patch available	GHSA-vxvf-xvm3-p8j5

Horizon VendorOpenStack Affected 25.6.0 to before 25.7.3 Fixed in 25.7.3 Patch available CNA
horizon (PyPI) Vendor— Affected 25.6 to before 25.7.3 Fixed in 25.7.3 Patch available GHSA-vxvf-xvm3-p8j5

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:openstack:horizon::::::::	25.6.0 to before 25.7.3	Vulnerable	OpenStack

cpe:2.3:a:openstack:horizon:*:*:*:*:*:*:*:* Versions 25.6.0 to before 25.7.3 Vulnerable ·OpenStack

Remediation

Fix · CNA Horizon (OpenStack) Fixed in 25.7.3
Fix · GHSA-vxvf-xvm3-p8j5 horizon (PyPI) Fixed in 25.7.3 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-43002
2026-10-03 Alias added: GHSA-vxvf-xvm3-p8j5

References

Exploit 1

https://bugs.launchpad.net/horizon/+bug/2150331

Patch 2

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-43002

Other 1

https://github.com/openstack/horizon

TI-2012-01917 Session fixation vulnerability in OpenStack Dashboard (Horizon) folsom-1 and 2012.1… CVSS 2.0MEDIUM 6.8
TI-2026-40246 OS command injection in OpenStack Horizon CVSS 3.1MEDIUM 6.8
TI-2012-03067 Open redirect vulnerability in views/auth_forms.py in OpenStack Dashboard (Horizon) Essex… CVSS 2.0MEDIUM 5.8
TI-2020-17754 An issue was discovered in OpenStack Horizon before 15.3.2, 16.x before 16.2.1, 17.x and… CVSS 3.1MEDIUM 6.1
TI-2022-22498 Open Redirect vulnerability in Horizon Web Dashboard 19.4.0 thru 20.1.4 via the success_url parameter. CVSS 3.1MEDIUM 6.1
TI-2016-03804 Cross-site scripting (XSS) vulnerability in OpenStack Dashboard (Horizon) 8.0.1 and… CVSS 3.1MEDIUM 5.4

See all 23 →

Sources

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