Review reviewHigh

CVE-2026-28406

chainguard-forks kaniko, OpenShift Serverless

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...

CVSS: 8.2
EPSS: 0.61%
CISA KEV: Not listed
Published: 2026.02.28

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.61%

Technical severityCVSS 8.2

Vulnerability overview

Affected product and versions

Product: chainguard-forks kaniko, OpenShift Serverless
Affected versions: >= >= 1.25.4, < 1.25.10, >= 1.25.4 < 1.25.10
Fixed versions: 1.25.10

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that chainguard-forks kaniko, OpenShift Serverless and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
CWE: CWE-22