{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "f5a6704"
              }
            ]
          }
        ]
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "f5a670421954fc7130c3685b713c621b29516669"
            }
          ],
          "repo": "https://github.com/ladybirdbrowser/ladybird",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "LibJS in Ladybird before f5a6704 mishandles the freeing of the vector that arguments_list references, leading to a use-after-free, and allowing remote attackers to execute arbitrary code via a crafted .js file. NOTE: the GitHub README says \"Ladybird is in a pre-alpha state, and only suitable for use by developers.\"",
  "id": "CVE-2025-47154",
  "modified": "2026-04-01T23:09:54.491417064Z",
  "published": "2025-05-01T08:15:17.950Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://news.ycombinator.com/item?id=43852096"
    },
    {
      "type": "WEB",
      "url": "https://jessie.cafe/posts/pwning-ladybirds-libjs/"
    },
    {
      "type": "FIX",
      "url": "https://github.com/LadybirdBrowser/ladybird/commit/f5a670421954fc7130c3685b713c621b29516669"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}