Missing type checks leading to hash rewind and passing on crafted data

{
  "id": "7fe7250f9bbd1cf37fc23593f3863cc62ca6054533723c8909ab118dc81e8768",
  "url": "https://osv.dev/vulnerability/CVE-2025-9287",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Missing type checks leading to hash rewind and passing on crafted data",
    "summary": "Improper Input Validation vulnerability in cipher-base allows Input Data Manipulation.This issue affects cipher-base: through 1.0.4.",
    "evidence": "osv:CVE-2025-9287",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2025-9287",
      "aliases": [
        "CVE-2025-9287",
        "GHSA-cpq7-6gpm-g9rc"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:H/SI:H/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/browserify/cipher-base",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "bc18dc847050c34f11f7a0472ff13a76b53fedc6"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.0.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:browserify:cipher-base:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.0.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.0.4",
            "v1.0.3",
            "v1.0.2",
            "v1.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-9287.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.332853775Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2025/09/msg00005.html",
        "https://npmjs.com/cipher-base",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9287.json",
        "https://github.com/browserify/cipher-base/security/advisories/GHSA-cpq7-6gpm-g9rc",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-9287",
        "https://github.com/browserify/cipher-base/pull/23",
        "https://github.com/browserify/cipher-base"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-20"
        ],
        "cna_assigner": "harborist",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/9xxx/CVE-2025-9287.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-9287",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505679,
  "published_at": "2025-08-20T21:43:56.548+00:00"
}