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Vulnerability Details CVE-2026-41326

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.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.001

EPSS Ranking 22.7%

CVSS Severity

CVSS v3 Score 8.2

References

Products affected by CVE-2026-41326

Katacontainers » Confidential Containers » Version: Any

cpe:2.3:a:katacontainers:confidential_containers:*
Katacontainers » Kata Containers » Version: 3.10.0

cpe:2.3:a:katacontainers:kata_containers:3.10.0
Katacontainers » Kata Containers » Version: 3.10.1

cpe:2.3:a:katacontainers:kata_containers:3.10.1
Katacontainers » Kata Containers » Version: 3.11.0

cpe:2.3:a:katacontainers:kata_containers:3.11.0
Katacontainers » Kata Containers » Version: 3.12.0

cpe:2.3:a:katacontainers:kata_containers:3.12.0
Katacontainers » Kata Containers » Version: 3.13.0

cpe:2.3:a:katacontainers:kata_containers:3.13.0
Katacontainers » Kata Containers » Version: 3.14.0

cpe:2.3:a:katacontainers:kata_containers:3.14.0
Katacontainers » Kata Containers » Version: 3.15.0

cpe:2.3:a:katacontainers:kata_containers:3.15.0
Katacontainers » Kata Containers » Version: 3.16.0

cpe:2.3:a:katacontainers:kata_containers:3.16.0
Katacontainers » Kata Containers » Version: 3.17.0

cpe:2.3:a:katacontainers:kata_containers:3.17.0
Katacontainers » Kata Containers » Version: 3.18.0

cpe:2.3:a:katacontainers:kata_containers:3.18.0
Katacontainers » Kata Containers » Version: 3.19.0

cpe:2.3:a:katacontainers:kata_containers:3.19.0
Katacontainers » Kata Containers » Version: 3.19.1

cpe:2.3:a:katacontainers:kata_containers:3.19.1
Katacontainers » Kata Containers » Version: 3.20.0

cpe:2.3:a:katacontainers:kata_containers:3.20.0
Katacontainers » Kata Containers » Version: 3.21.0

cpe:2.3:a:katacontainers:kata_containers:3.21.0
Katacontainers » Kata Containers » Version: 3.22.0

cpe:2.3:a:katacontainers:kata_containers:3.22.0
Katacontainers » Kata Containers » Version: 3.23.0

cpe:2.3:a:katacontainers:kata_containers:3.23.0
Katacontainers » Kata Containers » Version: 3.24.0

cpe:2.3:a:katacontainers:kata_containers:3.24.0
Katacontainers » Kata Containers » Version: 3.25.0

cpe:2.3:a:katacontainers:kata_containers:3.25.0
Katacontainers » Kata Containers » Version: 3.26.0

cpe:2.3:a:katacontainers:kata_containers:3.26.0
Katacontainers » Kata Containers » Version: 3.4.0

cpe:2.3:a:katacontainers:kata_containers:3.4.0
Katacontainers » Kata Containers » Version: 3.5.0

cpe:2.3:a:katacontainers:kata_containers:3.5.0
Katacontainers » Kata Containers » Version: 3.6.0

cpe:2.3:a:katacontainers:kata_containers:3.6.0
Katacontainers » Kata Containers » Version: 3.7.0

cpe:2.3:a:katacontainers:kata_containers:3.7.0
Katacontainers » Kata Containers » Version: 3.8.0

cpe:2.3:a:katacontainers:kata_containers:3.8.0
Katacontainers » Kata Containers » Version: 3.9.0

cpe:2.3:a:katacontainers:kata_containers:3.9.0

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Vulnerability Details CVE-2026-41326

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