CVE-2026-46606 Glances: Command Injection via KVM/QEMU VM Domain Names in glances/plugins/vms/engines/virsh.py
Attackers can execute arbitrary commands as root by crafting malicious KVM/QEMU VM domain names in Glances monitoring tool.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-46606?
CVE-2026-46606 is a high-severity command injection vulnerability in nicolargo glances, published on 25 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.5, the Glances KVM/QEMU monitoring engine (glances/plugins/vms/engines/virsh.py) passes VM domain names, read directly from virsh list --all output, into f-string command templates that are processed by secure_popen(). secure_popen() is explicitly designed to interpret &&, |, and > as shell operators. Because domain names are never sanitised before interpolation, any user with the ability to create or rename a KVM/QEMU virtual machine can execute arbitrary commands as the OS user running Glances — commonly root on hypervisor hosts. This vulnerability is fixed in 4.5.5.
Weakness: CWE-78
Which versions are affected by CVE-2026-46606?
3 open source packages ship an affected version, including glances.
| Package | Affected | Fixed in |
|---|---|---|
glances PyPI | All versions | 4.5.5 |
glances PyPI | All versions | 4.5.5 |
glances PyPI | All versions | 4.5.5 |
How do I fix CVE-2026-46606?
Upgrade glances to 4.5.5 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-46606 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46606 exists.
Sources
Also known as DEBIAN-CVE-2026-46606, GHSA-v5r2-qh84-fjx5, PYSEC-2026-2497, UBUNTU-CVE-2026-46606.