CVE-2026-43002

MEDIUM

OpenStack Horizon 25.6-25.7 < 25.7.3 - Unauthenticated Session Storage Exhaustion via Write Operation

Title source: llm

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.

References (3)

Core 3

Core References

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

https://www.openwall.com/lists/oss-security/2026/05/05/7

https://security.openstack.org/ossa/OSSA-2026-009.html

Scores

CVSS v3 5.3

EPSS 0.0007

EPSS Percentile 22.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CISA SSVC

Vulnrichment

Exploitation poc

Automatable yes

Technical Impact partial

Details

CWE

CWE-696

Status published

Products (2)

OpenStack/Horizon 25.6.0 - 25.7.3

pypi/horizon 25.6 - 25.7.3PyPI

Published May 05, 2026

Tracked Since May 05, 2026