Denial of Service Vulnerability in OpenStack Ironic by Vendor OpenStack
CVE-2026-115638

4.3MEDIUM

Key Information:

Vendor

Openstack
Status
Ironic
Vendor
CVE Published:
23 October 2026

What is CVE-2026-115638?

The OpenStack Ironic component prior to version 39.0.1 is susceptible to a denial of service due to a vulnerability involving a malformed 'configdrive' that can generate an excessive amount of uncompressed data, commonly referred to as a gzip bomb. This vulnerability allows attackers to exploit the system's resource handling capabilities, potentially leading to significant service disruption.

Affected Version(s)

Ironic 30.0.0 <= 32.1.1

Ironic 33.0.0 <= 35.1.1

Ironic 36.0.0 <= 39.0.1

References

https://bugs.launchpad.net/ironic/+bug/2171814

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.