CVE-2020-2026 is a high-severity (CVSS 8.8) CWE-59 vulnerability in github.com/kata-containers/runtime. A fix is available for github.com/kata-containers/runtime — see the affected versions and patch details below.
Link Following in Kata Runtime
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2020-2026 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
github.com/kata-containers/runtime🐹github.com/kata-containers/runtime🐹github.com/kata-containers/runtimeReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
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 Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/kata-containers/runtime | all versions | 1.9.1go get github.com/kata-containers/runtime@v1.9.1 |
| 🐹Go | github.com/kata-containers/runtime | ≥ 1.10.0&&< 1.10.6 | 1.10.6go get github.com/kata-containers/runtime@v1.10.6 |
| 🐹Go | github.com/kata-containers/runtime | ≥ 1.11.0&&< 1.11.1 | 1.11.1go get github.com/kata-containers/runtime@v1.11.1 |
Affected Products
fedorafedoraprojectruntimekatacontainersDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/kata-containers/runtime, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/kata-containers/runtime to 1.9.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-2026 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
Frequently Asked Questions
Is CVE-2020-2026 in your dependencies?
Find it across Go, including transitive dependencies.