What’s Vulnerable › Vulnerabilities

CVE-2020-2026: Kata Containers - Guests can trick the kata-runtime into mounting the container image on any host path

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-10 · updated 2026-06-17
• Weakness: CWE-59

Description

A malicious guest compromised before a container creation (e.g. a malicious guest image or a guest running multiple containers) can trick the kata runtime into mounting the untrusted container filesystem on any host path, potentially allowing for code execution on the host. This issue affects: Kata Containers 1.11 versions earlier than 1.11.1; Kata Containers 1.10 versions earlier than 1.10.5; Kata Containers 1.9 and earlier versions.

Affected products

• Fedoraproject Fedora: 31
• Katacontainers Runtime: through 1.9; from 1.10 before 1.10.5; from 1.11 before 1.11.1 — fixed in 1.10.5, 1.11.1

How to fix

Upgrade to a fixed version: Katacontainers Runtime 1.10.5, 1.11.1. Check the vendor advisory for mitigations.

References

• https://github.com/kata-containers/runtime/issues/2712
• https://github.com/kata-containers/runtime/pull/2713
• https://github.com/kata-containers/runtime/releases/tag/1.10.5
• https://github.com/kata-containers/runtime/releases/tag/1.11.1
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P7FHA4AF6Y6PAVJBTTQPUEHXZQUOF3P/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6JPBKAQBF3OR72N55GWM2TDYQP2OHK6H/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6W5MKF7HSAIL2AX2BX6RV4WWVGUIKVLS/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJAMOVB7DSOGX7J26QH5HZKU7GSSX2VU/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QNJHSSPCKUGJDVXXIXK2JUWCRJDQX7CE/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWACJQSMY5BVDMVTF3FBN7HZSOSFOG3Q/
• https://github.com/kata-containers/runtime/issues/2712
• https://github.com/kata-containers/runtime/pull/2713

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