High severity8.2NVD Advisory· Published Apr 24, 2026· Updated Jul 15, 2026
CVE-2026-41326
CVE-2026-41326
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/kata-containers/kata-containersGo | < 0.0.0-20260422180503-1b9e49eb2763 | 0.0.0-20260422180503-1b9e49eb2763 |
Affected products
4- cpe:2.3:a:katacontainers:confidential_containers:*:*:*:*:*:*:*:*Range: >=0.9.0,<0.20.0
- cpe:2.3:a:katacontainers:kata_containers:*:*:*:*:*:*:*:*Range: >=3.4.0,<3.29.0
- ghsa-coords2 versionspkg:golang/github.com/kata-containers/kata-containerspkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0
< 0.0.0-20260422180503-1b9e49eb2763+ 1 more
- (no CPE)range: < 0.0.0-20260422180503-1b9e49eb2763
- (no CPE)range: < 0.0.20260723T184607-160000.1.1
Patches
Vulnerability mechanics
References
9- github.com/kata-containers/kata-containers/commit/1b9e49eb2763aa6ea6a99b276d3ff5e2c7f658f2nvdPatchWEB
- www.openwall.com/lists/oss-security/2026/05/13/2nvdMailing ListThird Party AdvisoryWEB
- github.com/advisories/GHSA-q49m-57vm-c8ccghsaADVISORY
- github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8ccnvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-41326ghsaADVISORY
- access.redhat.com/errata/RHSA-2026:25200nvd
- access.redhat.com/security/cve/CVE-2026-41326nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41326.jsonnvd
News mentions
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