{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b97c8b5f198b27f375127cd597a35f2113544d03"
            }
          ],
          "repo": "https://github.com/strukturag/libheif",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "A vulnerability was determined in strukturag libheif up to 1.21.2. This affects the function vvdec_push_data2 of the file libheif/plugins/decoder_vvdec.cc of the component HEIF File Parser. Executing a manipulation of the argument size can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called b97c8b5f198b27f375127cd597a35f2113544d03. It is advisable to implement a patch to correct this issue.",
  "id": "CVE-2026-3949",
  "modified": "2026-03-15T21:49:38.158825882Z",
  "published": "2026-03-11T19:16:05.297Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.350381"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.350381"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.765979"
    },
    {
      "type": "WEB",
      "url": "https://github.com/biniamf/pocs/tree/main/libheif_vvdec"
    },
    {
      "type": "WEB",
      "url": "https://github.com/strukturag/libheif/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/strukturag/libheif/issues/1712"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/strukturag/libheif/issues/1712#issuecomment-3947938531"
    },
    {
      "type": "FIX",
      "url": "https://github.com/strukturag/libheif/commit/b97c8b5f198b27f375127cd597a35f2113544d03"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}