CVE-2026-43002
OpenStack Horizon has Incorrect Behavior Order
5.3
MEDIUM
CVSS 3.1
EPSS 0.10%
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.
How to fix CVE-2026-43002
To remediate CVE-2026-43002, upgrade the affected package to a fixed version below.
- —upgrade to 3:25.7.3-1 or later
- —upgrade to 25.7.3 or later
Is CVE-2026-43002 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3:25.7.3-1
- >= 25.6, < 25.7.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |