{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "2.0.0"
              },
              {
                "fixed": "2.11.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "92b67c5bfd8ee40b4443ce3911608a2d91a50a24"
            },
            {
              "fixed": "0124f50bbcf36c23e798e2b76f021f5032ec93d4"
            },
            {
              "fixed": "bb8f509e99cad230d3acc1fdfc840224f3b3db3a"
            }
          ],
          "repo": "https://github.com/netdata/netdata",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-8hjg-8hcf-fmwp"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83602.json"
  },
  "details": "Netdata is an open source observability tool. From 2.0.0 until 2.11.0, Netdata registers /api/v3/settings in src/web/api/v3/web_api_v3.c with HTTP_ACL_NOCHECK and HTTP_ACCESS_ANONYMOUS_DATA, causing unauthenticated PUT requests handled by src/web/api/v3/api_v3_settings.c to bypass operator-configured allow dashboard from IP restrictions. A network-reachable caller can persist attacker-controlled JSON in {varlib}/settings/default.json, manipulate its version counter, and use repeated near-20 MiB writes to consume disk space, although the file does not control collection or security policy. This vulnerability is fixed in 2.11.0.",
  "id": "CVE-2026-83602",
  "modified": "2026-09-26T03:30:54.309423489Z",
  "published": "2026-09-22T16:56:56.878Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/netdata/netdata/releases/tag/v2.11.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83602.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/netdata/netdata/security/advisories/GHSA-8hjg-8hcf-fmwp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-83602"
    },
    {
      "type": "FIX",
      "url": "https://github.com/netdata/netdata/commit/0124f50bbcf36c23e798e2b76f021f5032ec93d4"
    },
    {
      "type": "FIX",
      "url": "https://github.com/netdata/netdata/pull/22896"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Netdata: Unauthenticated remote PUT to /api/v3/settings bypasses IP allowlist controls via HTTP_ACL_NOCHECK"
}