Security advisory

{
  "id": "bb33b7375f5de8bb139bb83d141f935cd616137ddc17f6a7e2d20d7eb0acb541",
  "url": "https://osv.dev/vulnerability/CVE-2022-27780",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2022-27780",
    "summary": "The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a *different* URL usingthe wrong host name when it is later retrieved.For example, a URL like `http://example.com%2F127.0.0.1/`, would be allowed bythe parser and get transposed into `http://example.com/127.0.0.1/`. This flawcan be used to circumvent filters, checks and more.",
    "evidence": "osv:CVE-2022-27780",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-27780",
      "aliases": [
        "CURL-CVE-2022-27780",
        "CVE-2022-27780"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/curl/curl",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9e560d11aad028de74addc0d1edfefa5667884f4"
                },
                {
                  "fixed": "462196e6b4a47f924293a0e26b8e9c23d37ac26f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.80.0"
                      },
                      {
                        "fixed": "7.83.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "curl-7_83_0",
            "curl-7_82_0",
            "curl-7_81_0",
            "curl-7_80_0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-27780.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:34.731801137Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-398330.html",
        "https://hackerone.com/reports/1553841",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/27xxx/CVE-2022-27780.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-27780",
        "https://security.gentoo.org/glsa/202212-01",
        "https://security.netapp.com/advisory/ntap-20220609-0009/"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-177"
        ],
        "cna_assigner": "hackerone",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "7.83.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "VersionTextExtraction"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/27xxx/CVE-2022-27780.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-27780",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 502107,
  "published_at": "2022-06-01T00:00:00+00:00"
}