Kata Containers: CopyFile Policy Subversion via Symlinks_CVE-2026-41326

8.2 / 10

HIGH

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

Description

Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. From v3.4.0 to v3.28.0, an oversight in the CopyFile policy (and perhaps the CopyFile handler) allows untrusted hosts to write to arbitrary locations inside the guest workload image. This can be used to overwrite binaries inside the guest and exfiltrate data from containers; even those running inside CVMs. This vulnerability is fixed in v3.29.0.

Basic Information

ID CVE-2026-41326

Source GitHub_M

Published Apr 24, 2026 at 18:46

Affected Product

Vendor kata-containers

Product kata-containers

Version >= 3.4.0, < 3.29.0

Affected Versions kata-containers kata-containers >= 3.4.0, < 3.29.0

CWE Classification

CWE-61

References

github.com /kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc

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