Security advisory

{
  "id": "3a9be9642d2ef21e80c9583062801e0269f4c1242a28f99ba254577866cba3de",
  "url": "https://osv.dev/vulnerability/CVE-2018-18838",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-18838",
    "summary": "An issue was discovered in Netdata 1.10.0. Log Injection (or Log Forgery) exists via a %0a sequence in the url parameter to api/v1/registry.",
    "evidence": "osv:CVE-2018-18838",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-18838",
      "aliases": [
        "CVE-2018-18838"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/netdata/netdata",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c92349444f88427d8ddef2fb1ac6c4932cf6c8bb"
                },
                {
                  "last_affected": "c92349444f88427d8ddef2fb1ac6c4932cf6c8bb"
                },
                {
                  "fixed": "92327c9ec211bd1616315abcb255861b130b97ca"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:my-netdata:netdata:1.10.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.10.0"
                      },
                      {
                        "last_affected": "1.10.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "92327c9ec211bd1616315abcb255861b130b97ca"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.10.0",
            "v1.10.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-18838.json",
            "vanir_signatures": [
              {
                "id": "CVE-2018-18838-1abb3bcc",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "66543347973657702719146160550183012649",
                    "338539389829895664211686211858862033147",
                    "181613397865496398390060114766203357490",
                    "311939904960053635228447904840087471795",
                    "69162383861090423052578740815008696676",
                    "295754951258971798843125484558902277741"
                  ]
                },
                "source": "https://github.com/netdata/netdata/commit/92327c9ec211bd1616315abcb255861b130b97ca",
                "target": {
                  "file": "web/api/web_api_v1.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-18838-8953f44d",
                "digest": {
                  "length": 4676,
                  "function_hash": "204881456466600532908895856298960794977"
                },
                "source": "https://github.com/netdata/netdata/commit/92327c9ec211bd1616315abcb255861b130b97ca",
                "target": {
                  "file": "web/api/web_api_v1.c",
                  "function": "web_client_api_request_v1_data"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-18838-a1c71538",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "179904335846742252483163393046264994826",
                    "190346668020436203569205258275860151209",
                    "168848541308149862787108906740940067034",
                    "149049622975872964869544566748975749382"
                  ]
                },
                "source": "https://github.com/netdata/netdata/commit/92327c9ec211bd1616315abcb255861b130b97ca",
                "target": {
                  "file": "libnetdata/url/url.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-18838-f8c8e8f7",
                "digest": {
                  "length": 450,
                  "function_hash": "145019406472654216900235053973844180715"
                },
                "source": "https://github.com/netdata/netdata/commit/92327c9ec211bd1616315abcb255861b130b97ca",
                "target": {
                  "file": "libnetdata/url/url.c",
                  "function": "url_decode_r"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:32:06Z"
          }
        }
      ],
      "modified": "2026-10-20T13:32:06.156089687Z",
      "provider": "osv",
      "references": [
        "https://github.com/netdata/netdata/pull/4521",
        "https://github.com/netdata/netdata/commit/92327c9ec211bd1616315abcb255861b130b97ca",
        "https://www.red4sec.com/cve/netdata_log_injection.txt"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-18838",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387789,
  "published_at": "2019-06-18T16:15:10.68+00:00"
}