Improper Input Validation in huggingface/transformers

{
  "id": "8178c6708847a5b98b7ec20ce5471e052409ed616ab29827f87c3b5ac0e14133",
  "url": "https://osv.dev/vulnerability/CVE-2025-3777",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Improper Input Validation in huggingface/transformers",
    "summary": "Hugging Face Transformers versions up to 4.49.0 are affected by an improper input validation vulnerability in the `image_utils.py` file. The vulnerability arises from insecure URL validation using the `startswith()` method, which can be bypassed through URL username injection. This allows attackers to craft URLs that appear to be from YouTube but resolve to malicious domains, potentially leading to phishing attacks, malware distribution, or data exfiltration. The issue is fixed in version 4.52.1.",
    "evidence": "osv:CVE-2025-3777",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-3777",
      "aliases": [
        "CVE-2025-3777",
        "GHSA-phhr-52qp-3mj4",
        "PYSEC-2026-1986"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/huggingface/transformers",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "945727948c1143a10ac6f7d811aa58bb0d126b5b"
                },
                {
                  "fixed": "4dda5f71b35fb70cf602187eef84bb17a50b9082"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:huggingface:transformers:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.52.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4dda5f71b35fb70cf602187eef84bb17a50b9082"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.52.0",
            "v4.51.3-CSM-preview",
            "v4.51.3-GraniteMoeHybrid-preview",
            "v4.51.3-LlamaGuard-preview",
            "v4.51.3-D-FINE-preview",
            "v4.51.3-SAM-HQ-preview",
            "v4.51.3-BitNet-preview",
            "v4.51.3-InternVL-preview",
            "v4.51.3-Janus-preview",
            "v4.51.3-TimesFM-preview",
            "v4.51.3-MLCD-preview",
            "v4.51.3-Qwen2.5-Omni-preview",
            "v4.50.3-DeepSeek-3",
            "v4.49.0-Mistral-3",
            "v4.49.0-AyaVision",
            "v4.49.0-SigLIP-2",
            "v4.49.0-SmolVLM-2",
            "v4.33.1",
            "v4.16.0",
            "v4.15.0",
            "v4.14.0",
            "v4.13.0",
            "v4.12.0",
            "v4.11.0",
            "v4.10.0",
            "v4.9.0",
            "v4.8.0",
            "v4.7.0",
            "v4.6.0",
            "v4.5.0",
            "v4.4.0",
            "v4.3.0.rc1",
            "4.3.0.rc1",
            "v4.2.0",
            "v4.1.1",
            "v4.1.0",
            "v3.5.0",
            "v3.4.0",
            "v3.3.1",
            "v3.3.0",
            "v3.2.0",
            "v3.1.0",
            "v3.0.2",
            "v3.0.1",
            "3.0.1",
            "v3.0.0",
            "v2.11.0",
            "v2.10.0",
            "v2.9.1",
            "v2.9.0",
            "v2.8.0",
            "v2.7.0",
            "v2.6.0",
            "v2.5.1",
            "v2.5.0",
            "v2.4.1",
            "v2.4.0",
            "v2.3.0",
            "v2.2.2",
            "v2.2.1",
            "v2.2.0",
            "v2.1.1",
            "v2.1.0",
            "v2.0.0",
            "1.2.0",
            "1.1.0",
            "1.0",
            "v0.6.2",
            "v0.6.1",
            "v0.6.0",
            "v0.5.1",
            "v0.5.0",
            "0.5.0",
            "v0.4.0",
            "v0.3.0",
            "v0.2.0",
            "v0.1.2",
            "0.1.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-3777.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:32.192049459Z",
      "provider": "osv",
      "references": [
        "https://huntr.com/bounties/ccba0730-9248-4853-b7ff-5c20e6364f09",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3777.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-3777",
        "https://github.com/huggingface/transformers/commit/4dda5f71b35fb70cf602187eef84bb17a50b9082"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-20"
        ],
        "cna_assigner": "@huntr_ai",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3777.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-3777",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498955,
  "published_at": "2025-07-07T09:55:38.19+00:00"
}