{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.11.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "e3811f7ee6e9fdfc4cbcb9929cab3f5d71d722d7"
            },
            {
              "fixed": "bb8f509e99cad230d3acc1fdfc840224f3b3db3a"
            }
          ],
          "repo": "https://github.com/netdata/netdata",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-c8p4-cg3j-f4h2"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-409"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83599.json"
  },
  "details": "Netdata is an open source observability tool. Prior to 2.11.0, Netdata's unauthenticated WebSocket server negotiates permessage-deflate before authentication, and src/web/websocket/websocket-compression.c allows websocket_client_decompress_message() to grow decompressed output toward WS_MAX_DECOMPRESSED_SIZE without enforcing a compressed-to-decompressed ratio. Small highly compressed frames can therefore cause large server-side allocations, and repeated concurrent connections can exhaust memory and terminate monitoring. This vulnerability is fixed in 2.11.0.",
  "id": "CVE-2026-83599",
  "modified": "2026-09-25T03:31:02.535595206Z",
  "published": "2026-09-22T16:54:56.419Z",
  "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-2026-83599.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/netdata/netdata/security/advisories/GHSA-c8p4-cg3j-f4h2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-83599"
    },
    {
      "type": "FIX",
      "url": "https://github.com/netdata/netdata/commit/e3811f7ee6e9fdfc4cbcb9929cab3f5d71d722d7"
    },
    {
      "type": "FIX",
      "url": "https://github.com/netdata/netdata/pull/22828"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Netdata: WebSocket Decompression Bomb"
}