Security advisory

{
  "id": "bf3203562c3002c5457de83fdb312563b2aa735c5ed3df57c026ab407d37ad11",
  "url": "https://osv.dev/vulnerability/CVE-2020-26407",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-26407",
    "summary": "A XSS vulnerability exists in Gitlab CE/EE from 12.4 before 13.4.7, 13.5 before 13.5.5, and 13.6 before 13.6.2 that allows an attacker to perform cross-site scripting to other users via importing a malicious project",
    "evidence": "osv:CVE-2020-26407",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-26407",
      "aliases": [
        "BIT-gitlab-2020-26407",
        "CVE-2020-26407"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/gitlab-org/gitlab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "572e09f5e8fcd54b0366836668e6685da68de22f"
                },
                {
                  "fixed": "f23895b2190f1d72d96ada15463ab8e20abead5b"
                },
                {
                  "introduced": "2f8ec2ebf58d8d4885127b9715b143e6756f2df1"
                },
                {
                  "fixed": "2e75f6e5b161b73e2ba28508c656854a66793d95"
                },
                {
                  "introduced": "c050e8fb184690b8c4cc4c2a5c233f312d713b09"
                },
                {
                  "fixed": "98aab73cbd597dab5b0f1ab4b40dc160b0d2e26f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "12.4.0"
                      },
                      {
                        "fixed": "13.4.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "12.4.0"
                      },
                      {
                        "fixed": "13.4.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "13.5.0"
                      },
                      {
                        "fixed": "13.5.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "13.5.0"
                      },
                      {
                        "fixed": "13.5.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "13.6.0"
                      },
                      {
                        "fixed": "13.6.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "13.6.0"
                      },
                      {
                        "fixed": "13.6.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v13.6.1-ee",
            "v13.5.4-ee",
            "v13.6.0-ee",
            "v13.5.3-ee",
            "v13.5.1-ee",
            "v13.5.0-ee"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26407.json"
          }
        }
      ],
      "modified": "2026-10-30T10:30:54.391396124Z",
      "provider": "osv",
      "references": [
        "https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26407.json",
        "https://gitlab.com/gitlab-org/gitlab/-/issues/212630",
        "https://hackerone.com/reports/832117"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-26407",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 431860,
  "published_at": "2020-12-10T06:15:13.75+00:00"
}