Security advisory

{
  "id": "a37b52ce22e69ab78723072361ebf4e8beae54298ac1a2bd0b80d7fb64dad2e5",
  "url": "https://osv.dev/vulnerability/CVE-2019-20433",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-20433",
    "summary": "libaspell.a in GNU Aspell before 0.60.8 has a buffer over-read for a string ending with a single '\\0' byte, if the encoding is set to ucs-2 or ucs-4 outside of the application, as demonstrated by the ASPELL_CONF environment variable.",
    "evidence": "osv:CVE-2019-20433",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2019-20433",
      "aliases": [
        "CVE-2019-20433"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/gnuaspell/aspell",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "c96f9b06576cde08300c14f288727c754038fe3f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnu:aspell:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.60.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "rel-0.60.6.1",
            "rel-0.60.7-20110707"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20433.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:49.358914646Z",
      "provider": "osv",
      "references": [],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2019-20433",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 436972,
  "published_at": "2020-01-27T15:15:12.15+00:00"
}