{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:lodash:lodash:*:*:*:*:*:node.js:*:*",
              "cpe:2.3:a:lodash:lodash-amd:*:*:*:*:*:node.js:*:*",
              "cpe:2.3:a:lodash:lodash-es:*:*:*:*:*:node.js:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "4.0.0"
              },
              {
                "fixed": "4.17.23"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "d35a9c40beb594d09814ba7f7673b81d4d67a816"
            },
            {
              "fixed": "835a537f36ee2fd5fb7f524e213ff9ba2d8698f8"
            }
          ],
          "repo": "https://github.com/lodash/lodash",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-xxjr-mmjv-4gpg"
  ],
  "database_specific": {
    "cna_assigner": "openjs",
    "cwe_ids": [
      "CWE-1321"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2950.json"
  },
  "details": "Impact:\n\nLodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions. The fix for (CVE-2025-13465: https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg) only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype.\n\nThe issue permits deletion of prototype properties but does not allow overwriting their original behavior.\n\nPatches:\n\nThis issue is patched in 4.18.0.\n\nWorkarounds:\n\nNone. Upgrade to the patched version.",
  "id": "CVE-2026-2950",
  "modified": "2026-07-15T01:49:11.928412965Z",
  "published": "2026-03-31T19:18:35.796Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2950.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-2950"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "lodash vulnerable to Prototype Pollution via array path bypass in `_.unset` and `_.omit`"
}