Null byte termination in hostnames

{
  "id": "e04ae6725cdff9f6116aadbf921efa46a5267d5472a608d9f19178c8f28d3460",
  "url": "https://osv.dev/vulnerability/CVE-2025-1220",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Null byte termination in hostnames",
    "summary": "In PHP versions:8.1.* before 8.1.33, 8.2.* before 8.2.29, 8.3.* before 8.3.23, 8.4.* before 8.4.10 some functions like fsockopen() lack validation that the hostname supplied does not contain null characters. This may lead to other functions like parse_url() treat the hostname in different way, thus opening way to security problems if the user code implements access checks before access using such functions.",
    "evidence": "osv:CVE-2025-1220",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-1220",
      "aliases": [
        "BIT-libphp-2025-1220",
        "BIT-php-2025-1220",
        "BIT-php-min-2025-1220",
        "CVE-2025-1220",
        "GHSA-3cr5-j632-f35r"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/php/php-src",
              "type": "GIT",
              "events": [
                {
                  "introduced": "381ba9f5d0edd0c9c8ec1dea7e21d513ad08b115"
                },
                {
                  "fixed": "1996831969293a866863f7148f5416e99ea123cb"
                },
                {
                  "introduced": "70ee6c20ad97e02c2b8098aeea96fefbbc3ac5c2"
                },
                {
                  "fixed": "a6855fae73d7a969788e7ec916ae6c4cda2fc7e3"
                },
                {
                  "introduced": "d26068059e83fe40de3430a512471d194119bee0"
                },
                {
                  "fixed": "ad881e753961115ceaf340bc47e7151fd9be1b45"
                },
                {
                  "introduced": "b437f2b32eb364c9496d24abcc734272e5c9c980"
                },
                {
                  "fixed": "5b61b6dd838cd5fc70f1f1325dfdfd8730d966fb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.1.0"
                      },
                      {
                        "fixed": "8.1.33"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.2.0"
                      },
                      {
                        "fixed": "8.2.29"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.3.0"
                      },
                      {
                        "fixed": "8.3.23"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.4.0"
                      },
                      {
                        "fixed": "8.4.10"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-1220.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:29.752198760Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2025/07/msg00017.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1220.json",
        "https://github.com/php/php-src/security/advisories/GHSA-3cr5-j632-f35r",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-1220"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "php",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1220.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-1220",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496520,
  "published_at": "2025-07-13T22:18:36.974+00:00"
}