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    1 vulnerability by chainguard-forks

    CVE-2026-28406 (GCVE-0-2026-28406)

    Vulnerability from cvelistv5 – Published: 2026-02-27 21:20 – Updated: 2026-03-02 22:00
    VLAI
    Title
    kaniko has tar archive path traversal in build context extraction allows writing files outside destination directory
    Summary
    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.
    Severity
    8.2 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
    Assigner
    References
    Impacted products
    Vendor Product Version
    chainguard-forks kaniko Affected: >= 1.25.4, < 1.25.10
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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                "id": "CVE-2026-28406",
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                "role": "CISA Coordinator",
                "timestamp": "2026-03-02T22:00:23.511380Z",
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            "attackVector": "NETWORK",
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            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
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      "problemTypes": [
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      "providerMetadata": {
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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          "name": "https://github.com/chainguard-forks/kaniko/security/advisories/GHSA-6rxq-q92g-4rmf",
          "tags": [
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          "url": "https://github.com/chainguard-forks/kaniko/security/advisories/GHSA-6rxq-q92g-4rmf"
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      "source": {
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        "discovery": "UNKNOWN"
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      "title": "kaniko has tar archive path traversal in build context extraction allows writing files outside destination directory"
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    "dateReserved": "2026-02-27T15:33:57.289Z",
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