What’s Vulnerable › Vulnerabilities

CVE-2026-46606: Glances: Command Injection via KVM/QEMU VM Domain Names in glances/plugins/vms/engines/virsh.py

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-25 · updated 2026-10-25
• Weakness: CWE-78

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.

Affected products

• nicolargo glances: before 4.5.5

References

• https://github.com/nicolargo/glances/releases/tag/v4.5.5
• https://github.com/nicolargo/glances/security/advisories/GHSA-v5r2-qh84-fjx5
• https://github.com/nicolargo/glances/security/advisories/GHSA-v5r2-qh84-fjx5

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