What is CVE-2026-43002?

CVE-2026-43002 is a medium-severity vulnerability in Openstack Horizon, classified under CWE-696. CVSS score: 5.3/10. Published 2026-05-05.

How severe is CVE-2026-43002?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Openstack Horizon

CVE-2026-43002

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 o…

EPSS: 0.001 (26.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Openstack Horizon — versions 25.6.0

Weakness classification (CWE)

CWE-696

References

cve@mitre.org
cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2026-43002?: CVE-2026-43002 is a medium-severity vulnerability in Openstack Horizon, classified under CWE-696. CVSS score: 5.3/10. Published 2026-05-05.
How severe is CVE-2026-43002?: Medium severity. CVSS v3 base score is 5.3 out of 10.