CVE-2026-33743 | THREATINT

Description

Incus is a system container and virtual machine manager. Prior to version 6.23.0, a specially crafted storage bucket backup can be used by an user with access to Incus' storage bucket feature to crash the Incus daemon. Repeated use of this attack can be used to keep the server offline causing a denial of service of the control plane API. This does not impact any running workload, existing containers and virtual machines will keep operating. Version 6.23.0 fixes the issue.

PUBLISHED Reserved 2026-03-23 | Published 2026-03-26 | Updated 2026-03-27 | Assigner GitHub_M

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

< 6.23.0

affected

References

github.com/lxc/incus/security/advisories/GHSA-vg76-xmhg-j5x3 exploit

github.com/lxc/incus/security/advisories/GHSA-vg76-xmhg-j5x3

cve.org (CVE-2026-33743)

nvd.nist.gov (CVE-2026-33743)

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