Security advisory

{
  "id": "68db2f4334c6ae1cdbdce9a9d756c64b29c34ed244b2f347198a64f8e18ca686",
  "url": "https://osv.dev/vulnerability/CVE-2020-18770",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-18770",
    "summary": "An issue was discovered in function zzip_disk_entry_to_file_header in mmapped.c in zziplib 0.13.69, which will lead to a denial-of-service.",
    "evidence": "osv:CVE-2020-18770",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-18770",
      "aliases": [
        "CVE-2020-18770"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gdraheim/zziplib",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9d82e19c7f654722f9e37deaa9eb91c25ad544ec"
                },
                {
                  "last_affected": "9d82e19c7f654722f9e37deaa9eb91c25ad544ec"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gdraheim:zziplib:0.13.69:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.13.69"
                      },
                      {
                        "last_affected": "0.13.69"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.13.69",
            "v0.13.69"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-18770.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:04.004327784Z",
      "provider": "osv",
      "references": [
        "https://github.com/gdraheim/zziplib/issues/69"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-18770",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383253,
  "published_at": "2023-08-22T19:15:55.55+00:00"
}