Security advisory

{
  "id": "6870984b906f77b6071ac20d918f4b7cb2e875b08f6a98518f18ff8c666e78f7",
  "url": "https://osv.dev/vulnerability/CVE-2019-18455",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-18455",
    "summary": "An issue was discovered in GitLab Community and Enterprise Edition 11 through 12.4 when building Nested GraphQL queries. It has a large or infinite loop.",
    "evidence": "osv:CVE-2019-18455",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-18455",
      "aliases": [
        "CVE-2019-18455"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/gitlab-org/gitlab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c6f72ac9a88521257991aa9a0cc6d558126f5bb9"
                },
                {
                  "last_affected": "572e09f5e8fcd54b0366836668e6685da68de22f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "11.0.0"
                      },
                      {
                        "last_affected": "12.4.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "11.0.0"
                      },
                      {
                        "last_affected": "12.4.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-18455.json"
          }
        }
      ],
      "modified": "2026-10-30T10:30:25.346361825Z",
      "provider": "osv",
      "references": [
        "https://about.gitlab.com/blog/2019/10/30/security-release-gitlab-12-dot-4-dot-1-released/",
        "https://about.gitlab.com/blog/categories/releases/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-18455",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 439478,
  "published_at": "2019-11-26T17:15:12.577+00:00"
}