Security advisory

{
  "id": "d4ec23481778597e38f61fc6f90df8c5aed1a1aee7210bb2002de29dacc8befe",
  "url": "https://osv.dev/vulnerability/CVE-2021-45331",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-45331",
    "summary": "An Authentication Bypass vulnerability exists in Gitea before 1.5.0, which could let a malicious user gain privileges. If captured, the TOTP code for the 2FA can be submitted correctly more than once.",
    "evidence": "osv:CVE-2021-45331",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2021-45331",
      "aliases": [
        "BIT-gitea-2021-45331",
        "CVE-2021-45331",
        "GHSA-hfmf-q69j-6m5p",
        "GO-2022-0315"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/go-gitea/gitea",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "280ebcbf7c761a212fb091634384847a38f25cb0"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.5.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.1.0",
            "v1.0.0",
            "v0.9.99"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-45331.json"
          }
        }
      ],
      "modified": "2026-10-27T02:46:09.934453928Z",
      "provider": "osv",
      "references": [
        "https://blog.gitea.io/2018/08/gitea-1.5.0-is-released/",
        "https://github.com/go-gitea/gitea/pull/3878"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "gitea:gitea",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "1.5.0"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-45331",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 460108,
  "published_at": "2022-02-09T18:15:10.013+00:00"
}