CVE-2026-28406kaniko has tar archive path traversal in build context extraction allows writing files outside destination directory

Açıklama

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.

Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.

Etkilenen ürünler ve sürümler

Kaynaklar ve yamalar

• https://github.com/chainguard-forks/kaniko/security/advisories/GHSA-6rxq-q92g-4rmf PatchVendor Advisory
• https://github.com/chainguard-forks/kaniko/pull/326 Issue TrackingPatch
• https://github.com/chainguard-forks/kaniko/commit/a370e4b1f66e6e842b685c8f70ed507964c4b221 Patch
• https://access.redhat.com/security/cve/CVE-2026-28406
• https://bugzilla.redhat.com/show_bug.cgi?id=2443462
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28406.json