Security advisory

{
  "id": "38f250640d838234457ab359f763c4730a4aaa1ede3112431b86131f4561e3f1",
  "url": "https://osv.dev/vulnerability/CVE-2021-21705",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-21705",
    "summary": "In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.",
    "evidence": "osv:CVE-2021-21705",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-21705",
      "aliases": [
        "BIT-libphp-2021-21705",
        "BIT-php-2021-21705",
        "BIT-php-min-2021-21705",
        "CVE-2021-21705"
      ],
      "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/php/php-src",
              "type": "GIT",
              "events": [
                {
                  "introduced": "52ace952a1b65ca80fc2617f11c2fa6dd03f51bd"
                },
                {
                  "fixed": "0960f2cdcf27e843ab5102559d291de9997739ea"
                },
                {
                  "introduced": "3c7824e16ec4c3cee417262445d2c2b66531c10f"
                },
                {
                  "fixed": "bc008409dfa6a648671e4fde30b3a7acb374ec43"
                },
                {
                  "introduced": "5dc92c2117cafc61daaaaa240fd46c3ac33872a4"
                },
                {
                  "fixed": "73b5402048e23e8e2a9b13ea1a0a1adcc455e954"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.3.0"
                      },
                      {
                        "fixed": "7.3.29"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "7.4.0"
                      },
                      {
                        "fixed": "7.4.21"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0.0"
                      },
                      {
                        "fixed": "8.0.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21705.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:23.423464019Z",
      "provider": "osv",
      "references": [
        "https://security.gentoo.org/glsa/202209-20",
        "https://security.netapp.com/advisory/ntap-20211029-0006/",
        "https://bugs.php.net/bug.php?id=81122",
        "https://www.oracle.com/security-alerts/cpujan2022.html"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:oracle:sd-wan_aware:8.2:*:*:*:*:*:*:*"
            ],
            "vendor_product": "oracle:sd-wan_aware",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.2"
                  },
                  {
                    "last_affected": "8.2"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-21705",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430917,
  "published_at": "2021-10-04T04:15:08.21+00:00"
}