{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:juliangruber:brace-expansion:*:*:*:*:*:node.js:*:*",
            "extracted_events": [
              {
                "introduced": "5.0.0"
              },
              {
                "fixed": "5.0.6"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "46317b5d8779c151d24f65c9c139cd076f91a1c3"
            }
          ],
          "repo": "https://github.com/juliangruber/brace-expansion",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jxxr-4gwj-5jf2"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45149.json"
  },
  "details": "The brace-expansion library generates arbitrary strings containing a common prefix and suffix. From 5.0.0 to before 5.0.6, the max option was being applied too late. When expanding a single large numeric range like {1..10000000}, the sequence generation loop generates all 10 million intermediate elements before the max limit is applied With max=10, the output is correctly limited to 10 items, but the process still allocates ~505 MB and spends ~800ms building the full intermediate array. This vulnerability is fixed in 5.0.6.",
  "id": "CVE-2026-45149",
  "modified": "2026-07-23T03:56:12.033060396Z",
  "published": "2026-05-29T19:55:07.337Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45149.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-jxxr-4gwj-5jf2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45149"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "brace-expansion: Large numeric range defeats documented `max` DoS protection"
}