{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "826865251232611ec94078bab5a18ec875dad4a5"
            }
          ],
          "repo": "https://github.com/nyariv/sandboxjs",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g8f2-4f4f-5jqw"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-94"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43898.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "0.9.6"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "SandboxJS is a JavaScript sandboxing library. Prior to 0.9.6, sandbox-defined functions expose Function.caller, allowing sandboxed code to recover the internal LispType.Call runtime callback. That callback can then be invoked with attacker-controlled fake context and obj values to extract blocked host statics, recover the real host Function constructor, and execute arbitrary host JavaScript. This vulnerability is fixed in 0.9.6.",
  "id": "CVE-2026-43898",
  "modified": "2026-07-08T05:37:46.179967562Z",
  "published": "2026-05-28T17:50:31.581Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43898.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/nyariv/SandboxJS/security/advisories/GHSA-g8f2-4f4f-5jqw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43898"
    },
    {
      "type": "FIX",
      "url": "https://github.com/nyariv/SandboxJS/commit/826865251232611ec94078bab5a18ec875dad4a5"
    }
  ],
  "schema_version": "1.7.5",
  "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: Sandbox escape via Function.caller leakage of internal call op"
}