Security advisory

{
  "id": "ae6f08b93dc83d8af47d7745fdba1e99fd07cbfebdd27e8c9f9e2f6f6ee05a19",
  "url": "https://osv.dev/vulnerability/CVE-2023-26966",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-26966",
    "summary": "libtiff 4.5.0 is vulnerable to Buffer Overflow in uv_encode() when libtiff reads a corrupted little-endian TIFF file and specifies the output to be big-endian.",
    "evidence": "osv:CVE-2023-26966",
    "products": [],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2023-26966",
      "aliases": [
        "CVE-2023-26966"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://gitlab.com/libtiff/libtiff",
              "type": "GIT",
              "events": [
                {
                  "introduced": "38eb7b00cb5767770017fb91743a960ffd96d774"
                },
                {
                  "last_affected": "38eb7b00cb5767770017fb91743a960ffd96d774"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:libtiff:libtiff:4.5.0:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.5.0-NA"
                      },
                      {
                        "last_affected": "4.5.0-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.5.0-NA",
            "v4.5.0rc3",
            "v4.5.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-26966.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:39.442329799Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2025/01/msg00019.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/26xxx/CVE-2023-26966.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-26966",
        "https://gitlab.com/libtiff/libtiff/-/issues/530",
        "https://gitlab.com/libtiff/libtiff/-/merge_requests/473",
        "https://lists.debian.org/debian-lts-announce/2023/07/msg00034.html"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/26xxx/CVE-2023-26966.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-26966",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 507192,
  "published_at": "2023-06-29T00:00:00+00:00"
}