high8.2
CVE-2026-41326
Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/kata-containers/kata-containers | < 0.0.0-20260422180503-1b9e49eb2763 | 0.0.0-20260422180503-1b9e49eb2763 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Katacontainers | Confidential Containers | from 0.9.0 before 0.20.0 |
| Katacontainers | Kata Containers | from 3.4.0 before 3.29.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-q49m-57vm-c8cc
- https://github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc
- https://nvd.nist.gov/vuln/detail/CVE-2026-41326
- https://github.com/kata-containers/kata-containers/commit/1b9e49eb2763aa6ea6a99b276d3ff5e2c7f658f2
- http://www.openwall.com/lists/oss-security/2026/05/13/2
- https://access.redhat.com/errata/RHSA-2026:25200
- https://access.redhat.com/security/cve/CVE-2026-41326
- https://bugzilla.redhat.com/show_bug.cgi?id=2460859
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41326.json