{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "last_affected": "1.1.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "last_affected": "1.1.1"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "b211040df83dee513362cdeb9bd87afa26fd5e38"
            }
          ],
          "repo": "https://github.com/selmf/unarr",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-193"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111273.json"
  },
  "details": "unarr through 1.1.1 contains an off-by-one heap-based buffer overflow in tar_get_name() in tar/parse-tar.c, reachable through the ar_entry_get_name() API. Attackers can supply a crafted TAR archive with a full ustar prefix and name to write a NUL byte past the allocation, corrupting heap memory and crashing the process.",
  "id": "CVE-2026-111273",
  "modified": "2026-10-21T02:30:40.681919548Z",
  "published": "2026-10-15T21:43:19.717Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111273.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111273"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/unarr-through-1.1.1-off-by-one-heap-buffer-overflow-via-tar-get-name"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/selmf/unarr"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/tar/parse-tar.c#L242-L254"
    },
    {
      "type": "ARTICLE",
      "url": "https://hackmd.io/@haind-pwn/unarr-tar-zip-oob"
    },
    {
      "type": "EVIDENCE",
      "url": "https://hackmd.io/@haind-pwn/cve-2026-111273-111274-unarr-tar-zip-oob"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "unarr through 1.1.1 Off-by-One Heap Buffer Overflow via tar_get_name"
}