Security advisory

{
  "id": "5a4d0cfcdf001566b062b8c094a0ebb62894f114d108f3685ef79bca39a7e8f2",
  "url": "https://osv.dev/vulnerability/CVE-2020-19499",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-19499",
    "summary": "An issue was discovered in heif::Box_iref::get_references in libheif 1.4.0, allows attackers to cause a Denial of Service or possibly other unspecified impact due to an invalid memory read.",
    "evidence": "osv:CVE-2020-19499",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-19499",
      "aliases": [
        "CVE-2020-19499"
      ],
      "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/strukturag/libheif",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fca25874bb8021dede702bb7023a22af1a8a06ab"
                },
                {
                  "last_affected": "fca25874bb8021dede702bb7023a22af1a8a06ab"
                },
                {
                  "fixed": "f7399b62d7fbc596f1b2871578c1d2053bedf1dd"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:struktur:libheif:1.4.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.4.0"
                      },
                      {
                        "last_affected": "1.4.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f7399b62d7fbc596f1b2871578c1d2053bedf1dd"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.4.0",
            "v1.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-19499.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-19499-3ed6b852",
                "digest": {
                  "length": 551,
                  "function_hash": "298365236335932029718948655364595063960"
                },
                "source": "https://github.com/strukturag/libheif/commit/f7399b62d7fbc596f1b2871578c1d2053bedf1dd",
                "target": {
                  "file": "libheif/heif_context.cc",
                  "function": "HeifContext::get_id_of_non_virtual_child_image"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2020-19499-7b3219ee",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "95267164885634210382392158749447266934",
                    "83457711232404756495386676341864987400",
                    "111503610894445712197809965462065388581",
                    "77959063699929980087287118117281578552"
                  ]
                },
                "source": "https://github.com/strukturag/libheif/commit/f7399b62d7fbc596f1b2871578c1d2053bedf1dd",
                "target": {
                  "file": "libheif/heif_context.cc"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:52:38Z"
          }
        }
      ],
      "modified": "2026-10-20T13:52:38.851102109Z",
      "provider": "osv",
      "references": [
        "https://github.com/strukturag/libheif/commit/f7399b62d7fbc596f1b2871578c1d2053bedf1dd",
        "https://github.com/strukturag/libheif/issues/138"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-19499",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388327,
  "published_at": "2021-07-21T18:15:09.167+00:00"
}