Security advisory

{
  "id": "95b7f1fe4d21bbafe2f705bb79f044ceb1336a23b2fb6d27537932e24f9f79ce",
  "url": "https://osv.dev/vulnerability/CVE-2018-7648",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-7648",
    "summary": "An issue was discovered in mj2/opj_mj2_extract.c in OpenJPEG 2.3.0. The output prefix was not checked for length, which could overflow a buffer, when providing a prefix with 50 or more characters on the command line.",
    "evidence": "osv:CVE-2018-7648",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2018-7648",
      "aliases": [
        "CVE-2018-7648"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/uclouvain/openjpeg",
              "type": "GIT",
              "events": [
                {
                  "introduced": "081de4b15f54cb4482035b7bf5e3fb443e4bc84b"
                },
                {
                  "last_affected": "081de4b15f54cb4482035b7bf5e3fb443e4bc84b"
                },
                {
                  "fixed": "cc3824767bde397fedb8a1ae4786a222ba860c8d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:uclouvain:openjpeg:2.3.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.3.0"
                      },
                      {
                        "last_affected": "2.3.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "cc3824767bde397fedb8a1ae4786a222ba860c8d"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.3.0",
            "v2.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-7648.json",
            "vanir_signatures": [
              {
                "id": "CVE-2018-7648-411c3d8d",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "320682276623054871944337876216980139907",
                    "263881287619099284430256011721633502297",
                    "2848672890557279726117555643167944211",
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                    "303973254535423105423398004318675394013",
                    "185316987648347462227752028736580492744",
                    "146381316644439753433409365344195423450"
                  ]
                },
                "source": "https://github.com/uclouvain/openjpeg/commit/cc3824767bde397fedb8a1ae4786a222ba860c8d",
                "target": {
                  "file": "src/bin/mj2/opj_mj2_extract.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-7648-9adc509c",
                "digest": {
                  "length": 1790,
                  "function_hash": "18908964000435985548001782315975091160"
                },
                "source": "https://github.com/uclouvain/openjpeg/commit/cc3824767bde397fedb8a1ae4786a222ba860c8d",
                "target": {
                  "file": "src/bin/mj2/opj_mj2_extract.c",
                  "function": "main"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:35:02Z"
          }
        }
      ],
      "modified": "2026-10-20T13:35:02.967835041Z",
      "provider": "osv",
      "references": [
        "https://github.com/uclouvain/openjpeg/issues/1088",
        "https://github.com/uclouvain/openjpeg/commit/cc3824767bde397fedb8a1ae4786a222ba860c8d"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-7648",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387842,
  "published_at": "2018-03-02T16:29:00.213+00:00"
}