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CVE-2026-43002

Published: May 5, 2026Updated: May 7, 2026 Sources: CVE List NVDCWE-696
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.4%
Top 71.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-696

Affected Products

HorizonOpenStack
On-premWeb App
Cloud & SaaS / cloud-platform
openstackoss-projectUSCloud & SaaSaka openstack foundation

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

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

Timeline

Published
May 5, 2026
Last Updated
May 7, 2026

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