{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.30.0"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "cead30b2c3a34f66c0c40cb692ed51e588e63bd7"
            },
            {
              "fixed": "878a02cb7cc14f0a592fdfda7a520af3cac500fb"
            }
          ],
          "repo": "https://github.com/knowns-dev/knowns",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-fc85-99vc-9c75"
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-306"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86543.json"
  },
  "details": "knowns versions before 0.30.0 serve the management API without authentication on all network interfaces by default, with no password required on fresh installations. Attackers can access the unauthenticated /api/tunnel/start endpoint to provision a public tunnel and republish the API at a publicly accessible address.",
  "id": "CVE-2026-86543",
  "modified": "2026-09-12T03:30:15.826805126Z",
  "published": "2026-09-07T23:03:20.773Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86543.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/knowns-dev/knowns/releases/tag/v0.30.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/knowns-dev/knowns/security/advisories/GHSA-fc85-99vc-9c75"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86543"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/knowns-before-0.30.0-unauthenticated-management-api-exposure"
    },
    {
      "type": "FIX",
      "url": "https://github.com/knowns-dev/knowns/commit/878a02cb7cc14f0a592fdfda7a520af3cac500fb"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/cli/browser.go#L193-L200"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/auth.go#L80-L86"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/knowns-dev/knowns/blob/v0.29.1/internal/server/routes/tunnel.go#L26-L38"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "knowns before 0.30.0 Unauthenticated Management API Exposure"
}