CVE-2026-33542
Medium
Description
Incus is a system container and virtual machine manager. Prior to version 6.23.0, a lack of validation of the image fingerprint when downloading from simplestreams image servers opens the door to image cache poisoning and under very narrow circumstances exposes other tenants to running attacker controlled images rather than the expected one. Version 6.23.0 patches the issue.
SeverityMedium
CVSS4.8
Exploit probability—
ProductLinuxcontainers Incus
PublishedMar 26, 2026
First seenMar 26, 2026
Weakness typeCWE-295CWE-295
How to fix
Update
- linuxcontainers incus6.23.0 or later
- github.com/lxc/incus/v6/client6.23.0 or later
- github.com/lxc/incus/v66.23.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linuxcontainers incus | v < 6.23.0 | 6.23.0 |
| github.com/lxc/incus/v6/clientGo | v < 6.23.0 | 6.23.0 |
| github.com/lxc/incusGo | No range specified | — |
| github.com/lxc/incus/v6Go | v < 6.23.0 | 6.23.0 |
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