Security advisory

{
  "id": "896a10c1af083de59d2aa96b232c3c442a9f1fcc6c22fdc4469a48840d2bedbe",
  "url": "https://osv.dev/vulnerability/CVE-2020-5496",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-5496",
    "summary": "FontForge 20190801 has a heap-based buffer overflow in the Type2NotDefSplines() function in splinesave.c.",
    "evidence": "osv:CVE-2020-5496",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-5496",
      "aliases": [
        "CVE-2020-5496"
      ],
      "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": [
        {
          "ranges": [
            {
              "repo": "https://github.com/fontforge/fontforge",
              "type": "GIT",
              "events": [
                {
                  "introduced": "20190801"
                },
                {
                  "last_affected": "20190801"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:fontforge:fontforge:20190801:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "20190801"
                      },
                      {
                        "last_affected": "20190801"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "20190801"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-5496.json"
          }
        }
      ],
      "modified": "2026-10-24T10:50:02.634518505Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2024/03/msg00007.html",
        "https://security.gentoo.org/glsa/202004-14",
        "https://github.com/fontforge/fontforge/issues/4085"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"
            ],
            "vendor_product": "opensuse:leap",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "15.1"
                  },
                  {
                    "last_affected": "15.1"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2020-5496",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 441910,
  "published_at": "2020-01-03T22:15:13.333+00:00"
}