CVE-2026-44210: Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machine

Q: How do I fix CVE-2026-44210?

kata containers: upgrade to 3.31.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-44210 being exploited?

CVE-2026-44210 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-44210 affect?

CVE-2026-44210 affects kata containers. Severity is critical (CVSS 9.9). 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 injec

Q: How urgent is CVE-2026-44210?

Priority 52/100. Critical severity; Public exploit reference

This month

CRITICAL 9.9UPGRADE

CVE-2026-44210 is a critical-severity flaw (CVSS 9.9) affecting kata containers. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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-submount

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.9 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-88
Published	2026-07-23
Last modified	2026-08-06

Publisher (CNA): GitHub, Inc. · Vendor: katacontainers

Last updated 2026-08-06 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-23 18:16 UTCPublished CVE record published
2026-08-06 00:57 UTCUpdated Record last modified

katacontainers kata containers UPGRADE

Affected: < 3.31.0

Fixed in: 3.31.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy kata-containers || rpm -q kata-containers || kata-containers --version

2. UPGRADE to 3.31.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade kata-containers

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade kata-containers

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44210?

kata containers: upgrade to 3.31.0. Exact commands for each OS are on this page.

Is CVE-2026-44210 being exploited?

CVE-2026-44210 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44210 affect?

CVE-2026-44210 affects kata containers. Severity is critical (CVSS 9.9). 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 injec

How urgent is CVE-2026-44210?

Priority 52/100. Critical severity; Public exploit reference

References

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