CVEvulnerability

CVE-2026-28406

8.2 HIGH Published 2026-02-27 Modified 2026-07-15 Official page ↗
Status
Modified
Published
2026-02-27
Last modified
2026-07-15
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.2 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
8.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
Weaknesses
CWE-22

Description

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.

Affected configurations

• chainguard kaniko (>= 1.25.4 < 1.25.10)

Related

Weakness · CWE (1)

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness

References