Security advisory

{
  "id": "0214f15e851c62d83f31e69f63a0291b80ec4f3c58214d56728d03144c9803f1",
  "url": "https://osv.dev/vulnerability/CVE-2025-66960",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-66960",
    "summary": "An issue in ollama v.0.12.10 allows a remote attacker to cause a denial of service via the fs/ggml/gguf.go, function readGGUFV1String reads a string length from untrusted GGUF metadata",
    "evidence": "osv:CVE-2025-66960",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-66960",
      "aliases": [
        "CVE-2025-66960"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ollama/ollama",
              "type": "GIT",
              "events": [
                {
                  "introduced": "80d34260ea16e76c9ef0d014a86cc130421855f1"
                },
                {
                  "last_affected": "80d34260ea16e76c9ef0d014a86cc130421855f1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:ollama:ollama:0.12.10:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.12.10-NA"
                      },
                      {
                        "last_affected": "0.12.10-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.12.10-NA",
            "v0.12.10-rc1",
            "v0.12.10"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66960.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.144899642Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66960.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-66960",
        "https://github.com/ollama/ollama/issues/9820",
        "https://zero.shotlearni.ng/blog/cve-2025-66960guf-v1-string-length-cause-panic-in-readggufv1string/"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66960.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-66960",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505078,
  "published_at": "2026-01-21T00:00:00+00:00"
}