XZ Utils 5.8.3

{
  "id": "bb8f09825e5bbf2ada81228946f2f59c4a4811727c768e28e05f647b9c94866a",
  "url": "https://github.com/tukaani-project/xz/releases/tag/v5.8.3",
  "method": "llm",
  "payload": {
    "kind": "patch",
    "title": "XZ Utils 5.8.3",
    "summary": "XZ Utils 5.8.3 fixes CVE-2026-34743, including a liblzma buffer overflow and invalid memory access in xz’s --files and --files0 handling.",
    "evidence": "IMPORTANT: This includes a fix for CVE-2026-34743 which affects all XZ Utils versions since 5.0.0.",
    "products": [
      {
        "name": {
          "value": "XZ Utils",
          "evidence": "XZ Utils 5.8.3 (stable)"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.8.3",
            "evidence": "XZ Utils 5.8.3 (stable)"
          }
        ],
        "affected_versions": [
          {
            "value": "all XZ Utils versions since 5.0.0",
            "evidence": "which affects all XZ Utils versions since 5.0.0"
          }
        ]
      }
    ],
    "severity": "unknown",
    "fixed_cves": [
      {
        "cve": "CVE-2026-34743",
        "product": "XZ Utils",
        "evidence": "XZ Utils 5.8.3 (stable)\nIMPORTANT: This includes a fix for CVE-2026-34743"
      }
    ],
    "related_cves": [
      {
        "value": "CVE-2026-34743",
        "evidence": "IMPORTANT: This includes a fix for CVE-2026-34743"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "github-tukaani-project-xz",
  "document_id": 22781,
  "published_at": "2026-03-31T16:43:18+00:00"
}