CVE-2026-43002
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductOpenstack Horizon
PublishedMay 5, 2026
First seenMay 5, 2026
Weakness typeCWE-696CWE-696
How to fix
Update
- openstack horizon25.7.3 or later
- horizon25.7.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openstack horizon | 25.6.0 ≤ v < 25.7.3 | 25.7.3 |
| horizonPyPI | 25.6 ≤ v < 25.7.3 | 25.7.3 |
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