CVE-2026-41326

HIGH

Kata Containers: CopyFile Policy Subversion via Symlinks

Title source: cna

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.

References (1)

[X_Refsource_Confirm] https://github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc

Scores

CVSS v4 8.2

EPSS 0.0002

EPSS Percentile 5.2%

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-61

Status published

Products (1)

kata-containers/kata-containers >= 3.4.0, < 3.29.0

Published Apr 24, 2026

Tracked Since Apr 24, 2026