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Vulnerabilities / CVE-2026-44210

critical

CVE-2026-44210

kata-containers: Kata Containers: Privilege escalation and information disclosure via command-line argument injection

Published Modified CWE 88
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GHSA5.8CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:P
Red Hat9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (high), GHSA (medium), Azure Linux (medium).

Description

Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. Versions prior to 3.31.0 ship with a default configuration that allows pod creators to inject arbitrary command-line arguments into the virtiofsd process through the `io.katacontainers.config.hypervisor.virtio_fs_extra_args` pod annotation. By injecting `-o source=/` along with `--no-announce-submounts` and `--sandbox=none`, an attacker can override the virtiofsd shared directory to serve the entire host root filesystem into the guest VM. Combined with the `kernel_params` annotation (also enabled by default) to activate the agent debug console, the attacker can mount the host filesystem from inside the VM and read or write any file on the host, including /etc/shadow. Version 3.31.0 patches the issue.

Affected packages and fixed versions

SourcePackageFixed in
Azure Linux 3.0kata-containers, kata-containers-cc0:3.32.0.kata0-1.azl3 and 1 more
go::GitHub Security Advisory Gogithub.com/kata-containers/kata-containers0.0.0-20260519062212-ffa59ce3aa78
rapidfort fedora 43kata-containers3.25.0-2.fc43
Red Hatopenshift/ose-rhel-coreos-9no fix listed
Show all 5 entries from 4 sources
SourcePackageFixed in
Azure Linux 3.0kata-containers0:3.32.0.kata0-1.azl3
Azure Linux 3.0kata-containers-cc0:3.15.0.aks0-20.azl3
go::GitHub Security Advisory Gogithub.com/kata-containers/kata-containers0.0.0-20260519062212-ffa59ce3aa78
rapidfort fedora 43kata-containers3.25.0-2.fc43
Red Hatopenshift/ose-rhel-coreos-9no fix listed

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.