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.
Affected products
openstack: horizon
References4
- bugs.launchpad.net/horizon/+bug/2150331 ExploitIssue TrackingVendor Advisory
- security.openstack.org/ossa/OSSA-2026-009.html PatchVendor Advisory
- bugs.launchpad.net/horizon/+bug/2150331 ExploitIssue TrackingVendor Advisory
- www.openwall.com/lists/oss-security/2026/05/05/7 Mailing ListPatchThird Party Advisory
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - EPSS — exploit probability
- 0% percentile: 30 · as of 13 November 2026
- CWE
- CWE-696
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