Security advisory

{
  "id": "351a4e4fc6d603d5c4f1f2fd6b16dff423d8bb720116420142e67e2be03757b3",
  "url": "https://osv.dev/vulnerability/CVE-2021-33453",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-33453",
    "summary": "An issue was discovered in lrzip version 0.641. There is a use-after-free in ucompthread() in stream.c:1538.",
    "evidence": "osv:CVE-2021-33453",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-33453",
      "aliases": [
        "CVE-2021-33453"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ckolivas/lrzip",
              "type": "GIT",
              "events": [
                {
                  "introduced": "465afe830f1432fbccb0e228da1f6e7ed4e79653"
                },
                {
                  "last_affected": "465afe830f1432fbccb0e228da1f6e7ed4e79653"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:long_range_zip_project:long_range_zip:0.641:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.641"
                      },
                      {
                        "last_affected": "0.641"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "0.641",
            "v0.641"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33453.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:47.447206906Z",
      "provider": "osv",
      "references": [
        "https://github.com/ckolivas/lrzip/issues/199",
        "https://gist.github.com/Clingto/bb632c0c463f4b2c97e4f65f751c5e6d"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-33453",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384635,
  "published_at": "2022-07-26T13:15:09.253+00:00"
}