CVE WatchJul 23, 2026

CVE-2026-44210

Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like cont

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

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0-100

Published: Jul 23, 2026 · Last modified: Jul 23, 2026 · CWE-88

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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