Security advisory

{
  "id": "a39ff6329ab4dc044926bf5650be9ce2f09addd19d691d5ab9944185d0d34754",
  "url": "https://osv.dev/vulnerability/CVE-2026-2447",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-2447",
    "summary": "Heap buffer overflow in libvpx. This vulnerability affects Firefox < 147.0.4, Firefox ESR < 140.7.1, Firefox ESR < 115.32.1, Thunderbird < 140.7.2, and Thunderbird < 147.0.2.",
    "evidence": "osv:CVE-2026-2447",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-2447",
      "aliases": [
        "CVE-2026-2447"
      ],
      "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": [
        {
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2447.json",
            "unresolved_ranges": [
              {
                "events": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "115.32.1"
                  }
                ]
              },
              {
                "events": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "147.0.4"
                  }
                ]
              },
              {
                "events": [
                  {
                    "introduced": "116.0"
                  },
                  {
                    "fixed": "140.7.1"
                  }
                ]
              },
              {
                "events": [
                  {
                    "introduced": "0"
                  },
                  {
                    "fixed": "140.7.2"
                  }
                ]
              },
              {
                "events": [
                  {
                    "introduced": "141.0"
                  },
                  {
                    "fixed": "147.0.2"
                  }
                ]
              }
            ]
          }
        }
      ],
      "modified": "2026-10-12T10:56:57.247639497Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2026/02/msg00028.html",
        "https://www.mozilla.org/security/advisories/mfsa2026-10/",
        "https://www.mozilla.org/security/advisories/mfsa2026-11/",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=2014390"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-2447",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 299734,
  "published_at": "2026-02-16T15:18:34.74+00:00"
}