Detections
Analytics

CVE-2026-41326

high

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

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

http://www.openwall.com/lists/oss-security/2026/05/13/2

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41326.json

https://github.com/kata-containers/kata-containers/commit/1b9e49eb2763aa6ea6a99b276d3ff5e2c7f658f2

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-25611

https://bugzilla.redhat.com/show_bug.cgi?id=2460859

https://access.redhat.com/security/cve/CVE-2026-41326

https://access.redhat.com/errata/RHSA-2026:25200

Details

Source: Mitre, NVD

Published: 2026-04-24

Updated: 2026-08-24

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:P/A:N

Severity: High

CVSS v3

Base Score: 8.2

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Severity: High

CVSS v4

Base Score: 8.2

Vector: 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

Severity: High

EPSS

EPSS: 0.00371