جزئیات آسیب‌پذیری

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.

• https://github.com/chainguard-forks/kaniko/security/advisories/GHSA-6rxq-q92g-4rmf x_refsource_CONFIRM
• https://github.com/chainguard-forks/kaniko/pull/326 x_refsource_MISC
• https://github.com/chainguard-forks/kaniko/commit/a370e4b1f66e6e842b685c8f70ed507964c4b221 x_refsource_MISC
• https://access.redhat.com/security/cve/CVE-2026-28406 vdb-entryx_refsource_REDHAT
• https://bugzilla.redhat.com/show_bug.cgi?id=2443462 issue-trackingx_refsource_REDHAT
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28406.json x_sadp-csaf-vex