Security advisory

{
  "id": "11a867fd3616d1aa82a1f221451b67c09ad9cefeff6b216e9fe2889fe279c8e8",
  "url": "https://osv.dev/vulnerability/CVE-2020-26405",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-26405",
    "summary": "Path traversal vulnerability in package upload functionality in GitLab CE/EE starting from 12.8 allows an attacker to save packages in arbitrary locations. Affected versions are >=12.8, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.",
    "evidence": "osv:CVE-2020-26405",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-26405",
      "aliases": [
        "BIT-gitlab-2020-26405",
        "CVE-2020-26405"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/gitlab-org/gitlab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0bd32f788647bb832f3d9eb5746cbda5300e0fa2"
                },
                {
                  "fixed": "e5a4c9dc9077d8e96e74118cd00dfa452bd4522b"
                },
                {
                  "introduced": "2f8ec2ebf58d8d4885127b9715b143e6756f2df1"
                },
                {
                  "fixed": "6f3f825a6bcc61399d54fcbebfcbed572cf792d8"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "12.8.0"
                      },
                      {
                        "fixed": "13.3.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "12.8.0"
                      },
                      {
                        "fixed": "13.3.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "13.5.0"
                      },
                      {
                        "fixed": "13.5.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "13.5.0"
                      },
                      {
                        "fixed": "13.5.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v13.5.1-ee",
            "v13.5.0-ee"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26405.json"
          }
        }
      ],
      "modified": "2026-10-30T10:30:29.383055862Z",
      "provider": "osv",
      "references": [
        "https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26405.json",
        "https://gitlab.com/gitlab-org/gitlab/-/issues/247371",
        "https://hackerone.com/reports/835427"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
              "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*"
            ],
            "vendor_product": "gitlab:gitlab",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "13.4.0"
                  },
                  {
                    "fixed": "13.4.5"
                  },
                  {
                    "introduced": "13.4.0"
                  },
                  {
                    "fixed": "13.4.5"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-26405",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 435748,
  "published_at": "2020-11-17T19:15:11.28+00:00"
}