GHSA-945P-3JHM-6RCP

Vulnerability from github – Published: 2026-02-28 02:50 – Updated: 2026-02-28 02:50
VLAI?
Summary
malcontent: Nested archive extraction failure can drop content from scan inputs
Details

Previously, malcontent would remove nested archives which failed to extract which could potentially leave malicious content. A better approach is to preserve these archives so that malcontent can attempt a best-effort scan of the archive bytes.

Fix: https://github.com/chainguard-dev/malcontent/pull/1383

Acknowledgements

malcontent thanks Oleh Konko from 1seal for discovering and reporting this issue.

Severity ?
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/chainguard-dev/malcontent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.21.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-28407"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-703"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-28T02:50:09Z",
    "nvd_published_at": "2026-02-27T22:16:23Z",
    "severity": "MODERATE"
  },
  "details": "Previously, malcontent would remove nested archives which failed to extract which could potentially leave malicious content. A better approach is to preserve these archives so that malcontent can attempt a best-effort scan of the archive bytes.\n\n**Fix**:  https://github.com/chainguard-dev/malcontent/pull/1383\n\n**Acknowledgements**\n\nmalcontent thanks Oleh Konko from [1seal](https://1seal.org/) for discovering and reporting this issue.",
  "id": "GHSA-945p-3jhm-6rcp",
  "modified": "2026-02-28T02:50:09Z",
  "published": "2026-02-28T02:50:09Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/chainguard-dev/malcontent/security/advisories/GHSA-945p-3jhm-6rcp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-28407"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chainguard-dev/malcontent/pull/1383"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chainguard-dev/malcontent/commit/356c56659ccfcad0b249a97de8cf71f151ed3ee9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/chainguard-dev/malcontent"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "malcontent: Nested archive extraction failure can drop content from scan inputs"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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