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Vulnerability record · CVE-2026-46606 · published 25 June 2026

CVE-2026-46606: OS command injection vulnerability

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.

7.8 CVSS 3.1 High EPSS 0.21% · top 89.6% CWE-78 · OS command injection Deferred
7.8CVSS 3.1 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
25 Jun 2026Last modified by NVD

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.

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

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2026-46606), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.