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Vulnerabilities CVE-2026-50540

CVE-2026-50540

Critical
Open
TLP:CLEAR

Kata Containers: Config Path Annotation Arbitrary File Loading

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Description

Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. Prior to version 4.0.0, kata-runtime is vulnerable to host code execution via an unvalidated configuration path annotation. The runtime accepts an arbitrary io.katacontainers.config_path pod annotation and loads the referenced host TOML file without restriction. As a result, a pod user who can place a file at a host-visible path can supply a configuration that selects an attacker-controlled hypervisor or virtio-fs daemon binary, executing code as root on the host. This issue is fixed in version 4.0.0.

Details

CVSS Score
9.6
EPSS Score
0.38%

30.7th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Confidence
90%
Published
Aug 7, 2026
Last Modified
Aug 12, 2026
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