CVE-2026-44210: 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 wi

unknownCVE-2026-44210

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.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: unknown
Published: 2026-07-23
Last updated: 2026-07-24
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-44210

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-442100.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-44210	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Kata Containers is

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-44210: Kata Containers have VM Escape via virtiofsd Argument Injection through Default-Enabled Pod An…msrc · 2026-07-14
mediumGHSA-rr59-xxvx-96qr: Kata Containers have VM Escape via virtiofsd Argument Injection through Default-Enabled P…ghsa · 2026-05-26
mediumGHSA-wwj6-vghv-5p64: Kata Container to Guest micro VM privilege escalationghsa · 2026-02-19