SB2026052275 - Multiple vulnerabilities in Kata Containers

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Main Vulnerability Database SB2026052275

SB2026052275 - Multiple vulnerabilities in Kata Containers

Published: May 22, 2026

Security Bulletin ID SB2026052275
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Improper Neutralization of Argument Delimiters in a Command (CVE-ID: CVE-2026-44210)

CWE-ID: CWE-88 - Argument Injection or Modification

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote user to read and write arbitrary files on the host.

The vulnerability exists due to improper neutralization of argument delimiters in a command in the virtiofsd argument handling for the io.katacontainers.config.hypervisor.virtio_fs_extra_args pod annotation when processing user-supplied pod annotations. A remote user can inject crafted virtiofsd and kernel parameters to read and write arbitrary files on the host.

Exploitation requires the ability to create pods on a Kubernetes cluster using Kata Containers with the default annotation configuration enabled.


2) Path traversal (CVE-ID: CVE-2026-47243)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local privileged user to execute arbitrary code on the host system.

The vulnerability exists due to path traversal in the runtime-rs standalone virtio-fs path and host virtiofsd when processing raw FUSE_SYMLINK requests from a guest VM. A local privileged user can send a specially crafted FUSE request with an absolute host path to execute arbitrary code on the host system.

Exploitation requires root-equivalent code execution inside the Kata guest VM and affects deployments using standalone virtio-fs with host virtiofsd running as root.


Remediation

Install update from vendor's website.

References