{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "67cb186c41c78c51464f70405504e8ef0a6e43c3"
            }
          ],
          "repo": "https://github.com/nyariv/sandboxjs",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-66h4-qj4x-38xp"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25587.json"
  },
  "details": "SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, as Map is in SAFE_PROTOYPES, it's prototype can be obtained via Map.prototype. By overwriting Map.prototype.has the sandbox can be escaped. This vulnerability is fixed in 0.8.29.",
  "id": "CVE-2026-25587",
  "modified": "2026-04-01T23:08:04.702957940Z",
  "published": "2026-02-06T19:51:56.208Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25587.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nyariv/SandboxJS/security/advisories/GHSA-66h4-qj4x-38xp"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25587"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nyariv/SandboxJS/commit/67cb186c41c78c51464f70405504e8ef0a6e43c3"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "SandboxJS has a Sandbox Escape"
}