Directory Traversal Affecting buildpacks-lifecycle-fips-0.20 package, versions <0.20.20-r5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-MINIMOSLATEST-BUILDPACKSLIFECYCLEFIPS020-16345946
- published3 May 2026
- disclosed27 Feb 2026
Introduced: 27 Feb 2026
CVE-2026-28406 (opens in a new tab)How to fix?
Upgrade Minimos:latest buildpacks-lifecycle-fips-0.20 to version 0.20.20-r5 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream buildpacks-lifecycle-fips-0.20 package and not the buildpacks-lifecycle-fips-0.20 package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
kaniko is a tool to build container images from a Dockerfile, inside a container or Kubernetes cluster. Starting in version 1.25.4 and prior to version 1.25.10, kaniko unpacks build context archives using filepath.Join(dest, cleanedName) without enforcing that the final path stays within dest. A tar entry like ../outside.txt escapes the extraction root and writes files outside the destination directory. In environments with registry authentication, this can be chained with docker credential helpers to achieve code execution within the executor process. Version 1.25.10 uses securejoin for path resolution in tar extraction.
References
- https://www.cve.org/CVERecord?id=CVE-2026-28406
- https://github.com/advisories/GHSA-6rxq-q92g-4rmf
- https://osv.dev/vulnerability/MINI-cjrw-6r7q-f796
- https://osv.dev/vulnerability/CVE-2026-28406
- https://github.com/chainguard-forks/kaniko/commit/a370e4b1f66e6e842b685c8f70ed507964c4b221
- https://github.com/chainguard-forks/kaniko/pull/326
- https://github.com/chainguard-forks/kaniko/security/advisories/GHSA-6rxq-q92g-4rmf