Security advisory

{
  "id": "45098a1ccf9d9ab169556a4dab38c4702d94e38e86583333dceb5cd6b02f24e0",
  "url": "https://osv.dev/vulnerability/CVE-2021-22171",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-22171",
    "summary": "Insufficient validation of authentication parameters in GitLab Pages for GitLab 11.5+ allows an attacker to steal a victim's API token if they click on a maliciously crafted link",
    "evidence": "osv:CVE-2021-22171",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-22171",
      "aliases": [
        "BIT-gitlab-2021-22171",
        "CVE-2021-22171"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/gitlab-org/gitlab",
              "type": "GIT",
              "events": [
                {
                  "introduced": "cb71fca38c3de0c212685f97a46ee8426f63d301"
                },
                {
                  "fixed": "06fb068aba3228f300966c8b178bc8ab6d7d1149"
                },
                {
                  "introduced": "c050e8fb184690b8c4cc4c2a5c233f312d713b09"
                },
                {
                  "fixed": "5f4e8035ffe3e92941384242aabb64f911b94260"
                },
                {
                  "introduced": "036576a25d67513637c1e2cba5859af47695188e"
                },
                {
                  "fixed": "55a11a0db46cffdc680fec0dce14d2b973833506"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "11.5.0"
                      },
                      {
                        "fixed": "13.5.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "11.5.0"
                      },
                      {
                        "fixed": "13.5.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "13.6.0"
                      },
                      {
                        "fixed": "13.6.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "13.6.0"
                      },
                      {
                        "fixed": "13.6.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*",
                    "range": [
                      {
                        "introduced": "13.7.0"
                      },
                      {
                        "fixed": "13.7.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "13.7.0"
                      },
                      {
                        "fixed": "13.7.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v13.7.1-ee",
            "v13.6.3-ee",
            "v13.7.0-ee",
            "v13.6.1-ee",
            "v13.6.0-ee"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-22171.json"
          }
        }
      ],
      "modified": "2026-10-30T10:30:26.321513542Z",
      "provider": "osv",
      "references": [
        "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22171.json",
        "https://gitlab.com/gitlab-org/gitlab-pages/-/issues/262",
        "https://hackerone.com/reports/718460"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-22171",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 436230,
  "published_at": "2021-01-15T16:15:13.517+00:00"
}