Security advisory

{
  "id": "f7b450645f61da50ab2140acf42f71a413e555f8c2123b86a149a7d61ca9a29b",
  "url": "https://osv.dev/vulnerability/CVE-2021-29482",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-29482",
    "summary": "xz is a compression and decompression library focusing on the xz format completely written in Go. The function readUvarint used to read the xz container format may not terminate a loop provide malicous input. The problem has been fixed in release v0.5.8. As a workaround users can limit the size of the compressed file input to a reasonable size for their use case. The standard library had recently the same issue and got the CVE-2020-16845 allocated.",
    "evidence": "osv:CVE-2021-29482",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-29482",
      "aliases": [
        "CVE-2021-29482",
        "GHSA-25xm-hr59-7c27",
        "GO-2020-0016"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ulikunitz/xz",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "492fb8161cff03dd43fd938e40ecede6c6ffd8eb"
                },
                {
                  "fixed": "69c6093c7b2397b923acf82cb378f55ab2652b9b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:xz_project:xz:*:*:*:*:*:go:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.5.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "69c6093c7b2397b923acf82cb378f55ab2652b9b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.5.7",
            "v0.5.6",
            "v0.5.5",
            "v0.5.4",
            "v0.5.3",
            "v0.5.2",
            "v0.5.1",
            "v0.5",
            "v0.4.1",
            "v0.4",
            "v0.3.1",
            "v0.3",
            "v0.2",
            "v0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29482.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:43.550254328Z",
      "provider": "osv",
      "references": [
        "https://github.com/ulikunitz/xz/security/advisories/GHSA-25xm-hr59-7c27",
        "https://github.com/ulikunitz/xz/commit/69c6093c7b2397b923acf82cb378f55ab2652b9b"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-29482",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384545,
  "published_at": "2021-04-28T19:15:08.587+00:00"
}