Prototype pollution vulnerability leading to arbitrary code execution in synchrony deobfuscator

{
  "id": "56d0ae75f56e576a38bba066f7d31f4acfb97562fdd1e54f6bd6763dd8541bea",
  "url": "https://osv.dev/vulnerability/CVE-2023-45811",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Prototype pollution vulnerability leading to arbitrary code execution in synchrony deobfuscator",
    "summary": "Synchrony deobfuscator is a javascript cleaner & deobfuscator. A `__proto__` pollution vulnerability exists in versions before v2.4.4. Successful exploitation could lead to arbitrary code execution. A `__proto__` pollution vulnerability exists in the `LiteralMap` transformer allowing crafted input to modify properties in the Object prototype. A fix has been released in `deobfuscator@2.4.4`. Users are advised to upgrade. Users unable to upgrade should launch node with the [--disable-proto=delete][disable-proto] or [--disable-proto=throw][disable-proto] flags",
    "evidence": "osv:CVE-2023-45811",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-45811",
      "aliases": [
        "CVE-2023-45811",
        "GHSA-jg82-xh3w-rhxx"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/relative/synchrony",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c73b7845a1d82333235644fc682f207325a5d9ba"
                },
                {
                  "fixed": "3c6cbdb06f17c6bd25fa30a7cf491e3ccb07c5f3"
                },
                {
                  "fixed": "b583126be94c4db7c5a478f1c5204bfb4162cf40"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:relative:synchrony:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "2.0.1"
                      },
                      {
                        "fixed": "2.4.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b583126be94c4db7c5a478f1c5204bfb4162cf40"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.4.3",
            "2.4.2",
            "2.4.1",
            "2.4.0",
            "2.3.0",
            "2.2.0",
            "2.1.5",
            "2.1.4",
            "2.1.3",
            "2.1.2",
            "2.1.1",
            "2.1.0",
            "2.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-45811.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:35.855755096Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45811.json",
        "https://github.com/relative/synchrony/security/advisories/GHSA-jg82-xh3w-rhxx",
        "https://github.com/relative/synchrony/security/advisories/src/transformers/literalmap.ts",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-45811",
        "https://github.com/relative/synchrony/commit/b583126be94c4db7c5a478f1c5204bfb4162cf40"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1321"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45811.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-45811",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503192,
  "published_at": "2023-10-17T22:37:20.249+00:00"
}