Security advisory

{
  "id": "ca533f47f42450b116f05bd64123d2c41f1ca56580d44d3745b9d59c5c693505",
  "url": "https://osv.dev/vulnerability/CVE-2020-19497",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-19497",
    "summary": "Integer overflow vulnerability in Mat_VarReadNextInfo5 in mat5.c in tbeu matio (aka MAT File I/O Library) 1.5.17, allows attackers to cause a Denial of Service or possibly other unspecified impacts.",
    "evidence": "osv:CVE-2020-19497",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-19497",
      "aliases": [
        "CVE-2020-19497"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tbeu/matio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "64f793668e09216029447990702c145403d14375"
                },
                {
                  "last_affected": "64f793668e09216029447990702c145403d14375"
                },
                {
                  "fixed": "5fa49ef9fc4368fe3d19b5fdaa36d8fa5e7f4606"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:matio_project:matio:1.5.17:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.5.17"
                      },
                      {
                        "last_affected": "1.5.17"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5fa49ef9fc4368fe3d19b5fdaa36d8fa5e7f4606"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.5.17",
            "v1.5.17"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-19497.json",
            "vanir_signatures": [
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                "id": "CVE-2020-19497-50629e9c",
                "digest": {
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                  "function_hash": "168464128060177551819576737395990941673"
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                "source": "https://github.com/tbeu/matio/commit/5fa49ef9fc4368fe3d19b5fdaa36d8fa5e7f4606",
                "target": {
                  "file": "src/mat5.c",
                  "function": "ReadNextCell"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-19497-6f7c70f5",
                "digest": {
                  "length": 6709,
                  "function_hash": "46882531944099989651222743139195519614"
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                "source": "https://github.com/tbeu/matio/commit/5fa49ef9fc4368fe3d19b5fdaa36d8fa5e7f4606",
                "target": {
                  "file": "src/mat5.c",
                  "function": "Mat_VarReadNextInfo5"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-19497-84f975f7",
                "digest": {
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                "source": "https://github.com/tbeu/matio/commit/5fa49ef9fc4368fe3d19b5fdaa36d8fa5e7f4606",
                "target": {
                  "file": "src/mat5.c"
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                "deprecated": false,
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            ],
            "vanir_signatures_modified": "2026-10-20T13:52:50Z"
          }
        }
      ],
      "modified": "2026-10-20T13:52:50.040858441Z",
      "provider": "osv",
      "references": [
        "https://github.com/tbeu/matio/commit/5fa49ef9fc4368fe3d19b5fdaa36d8fa5e7f4606",
        "https://github.com/tbeu/matio/issues/121"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-19497",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388339,
  "published_at": "2021-07-21T18:15:09.097+00:00"
}