Security advisory

{
  "id": "eee371162c953b513b3529607b014e15744331499ab286c350535d26bf9c8230",
  "url": "https://osv.dev/vulnerability/CVE-2019-12434",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-12434",
    "summary": "An issue was discovered in GitLab Community and Enterprise Edition 10.6 through 11.11. Users could guess the URL slug of private projects through the contrast of the destination URLs of issues linked in comments. It allows Information Disclosure.",
    "evidence": "osv:CVE-2019-12434",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2019-12434",
      "aliases": [
        "CVE-2019-12434"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/gitlab-org/gitlab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "3d59f5643aa87ca1fc506bf1ad37262d8ca6b4d6"
                },
                {
                  "last_affected": "deb6f84e91fe4d21daa6b5558c517254ea2668a3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "10.6.0"
                      },
                      {
                        "last_affected": "11.11.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "10.6.0"
                      },
                      {
                        "last_affected": "11.11.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12434.json"
          }
        }
      ],
      "modified": "2026-10-30T10:30:50.732317660Z",
      "provider": "osv",
      "references": [
        "https://about.gitlab.com/blog/categories/releases/",
        "https://about.gitlab.com/releases/2019/06/03/security-release-gitlab-11-dot-11-dot-1-released/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-12434",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 439038,
  "published_at": "2020-03-10T14:15:11.957+00:00"
}