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 of the CVE-2014-8124 fix.

Score

CVSS 3.1 5.3 Medium

Status

Analyzed - cve@mitre.org

Published

2026-05-05

Last modified

2026-05-06

Weaknesses

CWE-696

Affected products

• Horizon (Openstack)

References

• https://bugs.launchpad.net/horizon/+bug/2150331
• https://security.openstack.org/ossa/OSSA-2026-009.html
• https://www.openwall.com/lists/oss-security/2026/05/05/7