{"width":"100%","author_url":"https://blog.hatena.ne.jp/ThisIsOne/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fcysec148.hatenablog.com%2Fentry%2F2025%2F09%2F17%2F060139\" title=\"URL\u306b\u3088\u308bPrototype Pollution\uff08\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u6c5a\u67d3\uff09\u306e\u4ed5\u7d44\u307f\u3068\u30ea\u30b9\u30af\u89e3\u8aac - Shikata Ga Nai\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"title":"URL\u306b\u3088\u308bPrototype Pollution\uff08\u30d7\u30ed\u30c8\u30bf\u30a4\u30d7\u6c5a\u67d3\uff09\u306e\u4ed5\u7d44\u307f\u3068\u30ea\u30b9\u30af\u89e3\u8aac","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","blog_url":"https://cysec148.hatenablog.com/","published":"2025-09-17 06:01:39","description":"Hello there, ('\u03c9')\u30ce \ud83d\udca3 \u653b\u6483\u306e\u51fa\u767a\u70b9\uff1a\u60aa\u610f\u3042\u308bURL https://vulnerable-website.com/?__proto__[evilProperty]=payload \u3053\u306eURL\u306e\u30af\u30a8\u30ea\u30d1\u30e9\u30e1\u30fc\u30bf\u90e8\u5206\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\uff1a ?__proto__[evilProperty]=payload \u3053\u308c\u306f\u3001JavaScript\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3059\u308b\u6642\u306e\u6b21\u306e\u3088\u3046\u306a\u5f62\u306b\u30d1\u30fc\u30b9\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff1a { \"__proto__\": { \"evilProperty\": \"payload\" } } \u3053\u3053\u3067\u653b\u6483\u8005\u306e\u610f\u56f3\u306f\uff1a __proto__ \u3092\u4f7f\u3063\u3066\u3001\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u89aa\uff08\uff1d\u30d7\u30ed\u30c8\u30bf\u2026","version":"1.0","type":"rich","blog_title":"Shikata Ga Nai","height":"190","author_name":"ThisIsOne","url":"https://cysec148.hatenablog.com/entry/2025/09/17/060139","categories":["Web Security Academy","Prototype pollution"]}