libsndfile WAV Parsing wavlike.c wavlike_subchunk_parse uninitialized variable

{
  "id": "c83f1a86c95bb34703b1cbe10e78793c87d711cbd84cacd0404690668a1ab16d",
  "url": "https://osv.dev/vulnerability/CVE-2026-109828",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "libsndfile WAV Parsing wavlike.c wavlike_subchunk_parse uninitialized variable",
    "summary": "A vulnerability was found in libsndfile up to 1.2.2. This issue affects the function wavlike_subchunk_parse of the file src/wavlike.c of the component WAV Parsing. Performing a manipulation results in use of uninitialized variable. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.",
    "evidence": "osv:CVE-2026-109828",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-109828",
      "aliases": [
        "CVE-2026-109828"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libsndfile/libsndfile",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2ed38b57c5838ba6b7c8e726a62855845bd42ec5"
                },
                {
                  "last_affected": "72f6af15e8f85157bd622ed45b979025828b7001"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.2.0"
                      },
                      {
                        "last_affected": "1.2.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.2.1"
                      },
                      {
                        "last_affected": "1.2.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.2.2"
                      },
                      {
                        "last_affected": "1.2.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.2.2"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.2.0",
            "1.2.1",
            "1.2.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109828.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:35.901162234Z",
      "provider": "osv",
      "references": [
        "https://github.com/libsndfile/libsndfile/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109828.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-109828",
        "https://vuldb.com/cve/CVE-2026-109828",
        "https://vuldb.com/submit/1002209",
        "https://vuldb.com/vuln/417466",
        "https://github.com/libsndfile/libsndfile/issues/1169",
        "https://vuldb.com/vuln/417466/cti"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-453",
          "CWE-457"
        ],
        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109828.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-109828",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503339,
  "published_at": "2026-10-13T17:00:15.758+00:00"
}