GHSA-XVG2-CGV6-6H7V

Vulnerability from github – Published: 2026-07-29 17:03 – Updated: 2026-07-29 17:03
VLAI
Summary
netfoil: Incorrect block responses could lead to localhost traffic
Details

Summary

0.0.0.0 was used instead of NXDOMAIN for block responses. On Linux, which is the target platform for netfoil, the 0.0.0.0 is sent to localhost rather than just dropped.

Impact

Unintended traffic could be sent to localhost. Impact depends on running services and firewall rules.

Severity
7.4 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/tinfoil-factory/netfoil"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-693"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-29T17:03:48Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Summary\n`0.0.0.0` was used instead of NXDOMAIN for block responses. On Linux, which is the target platform for netfoil, the `0.0.0.0` is sent to localhost rather than just dropped.\n\n### Impact\nUnintended traffic could be sent to localhost. Impact depends on running services and firewall rules.",
  "id": "GHSA-xvg2-cgv6-6h7v",
  "modified": "2026-07-29T17:03:48Z",
  "published": "2026-07-29T17:03:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tinfoil-factory/netfoil/security/advisories/GHSA-xvg2-cgv6-6h7v"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tinfoil-factory/netfoil/pull/33"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tinfoil-factory/netfoil/commit/891d3513c77999a9deef9f23506807d9653ee448"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tinfoil-factory/netfoil"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tinfoil-factory/netfoil/releases/tag/v0.4.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "netfoil: Incorrect block responses could lead to localhost traffic"
}



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