CVE-2025-59837 Analysis: How I Bypassed an Astro Security Patch
19/11/2025
Trung NguyenHacker. Builder. Educator. On a mission to make the internet safer.
Về tác giả
Trung NguyenHacker. Builder. Educator. On a mission to make the internet safer. Hacker. Builder. Educator. On a mission to make the internet safer.
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AuthBox-RequestCode__idpsExist\">\n <form class=\"AuthFormLogin\" action='https://cystack.cloudflareaccess.com/cdn-cgi/access/verify-code/blog.cystack.org?kid=d08cc312d3580268df3aca24cb4f4b746aa558ed0a384cb4d73dd768eb0201f7&meta=eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjA4YWQ1NGZmYjhlMGQ4YTQxMTNkNzEzOTVkNDQ4ZjU4ZjZlMDEyMjljOWU2MGVkMjNiOWI5N2Q2YTA3ZjUwMzIifQ.eyJ0eXBlIjoibWV0YSIsImF1ZCI6ImQwOGNjMzEyZDM1ODAyNjhkZjNhY2EyNGNiNGY0Yjc0NmFhNTU4ZWQwYTM4NGNiNGQ3M2RkNzY4ZWIwMjAxZjciLCJob3N0bmFtZSI6ImJsb2cuY3lzdGFjay5vcmciLCJyZWRpcmVjdF91cmwiOiIvbGFicy93cC1qc29uL3dwL3JhbmttYXRoL3YxL2dldEhlYWQ_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.DwuIwwplcx9bwhkLyX52fA64zS2N4e8DnV2U1O3iS8PHYGwVNq8y_79LLSkPqeGIGDqAQ5GAH97-ZyN9J_yB4g1WALqLqOPQJ7SI9X6MEZliR8z3iRXCt-MjiZNcTjHiSJ-dopnalGHDu1laL9LIRL08Qmdf3nzh9hIlkoxZyxwRhVN5tnNz0ua0LGDLHDQ7y9LrV3js9vFhv4Z6c7R89UYHMmfUpwoCXPYuMbvX7T110yIFEq-Vyt_oK21sLDMdTBk15sWUFpAZhhXo5fRSx29S6YupbJOQBjx_7mxzpgzfeerY7K3wKMNv2meh9PhbTJYjRGdANrVB-pNek5TlKw&redirect_url=%2Flabs%2Fwp-json%2Fwp%2Frankmath%2Fv1%2FgetHead%3Furl%3Dhttps%3A%252F%252Fblog.cystack.org%252Flabs%252F2025%252F11%252F19%252Fcve-2025-59837-astro-ssrf-bypass%252F' method=\"post\" id=\"totp-form\">\n <div class=\"AuthFormLogin-row\">\n <label for=\"email\">Email</label>\n <input id=\"email\" class=\"StandardInput-is-block StandardInput EmailInput\" type=\"email\" required\n placeholder=\"example@email.com\" spellcheck=\"false\" autocomplete=\"off\" autocapitalize=\"none\"\n name=\"email\">\n <input hidden type=\"text\" name=\"client_id\" value=''>\n <input hidden type=\"text\" name=\"connector_id\" value=''>\n <input hidden type=\"text\" name=\"connector_type\" value=''>\n <input hidden type=\"text\" name=\"redirect_url\" value=''>\n </div>\n <div class=\"AuthFormLogin-row\">\n <button type=\"submit\" form=\"totp-form\" class=\"Button-is-block Button Button-is-juicy\">\n Send login code\n </button>\n </div>\n </form>\n </div>\n\n </div>\n </div>\n </div>\n </div>\n\n <script>\"use strict\";if(document.addEventListener(\"keyup\",function(e){if(\"BODY\"===e.target.nodeName&&e.key>=1&&e.key<=10){var t=document.getElementById(\"idp\"+e.key);window.location=t.getAttribute(\"href\")}},!1),\"\"!==fragment&&fragment.length<100){var services=get(\".js-idp\")||[];services.map(function(e){return e.href=addFragmentToURLState(e.href),e})}</script>\n </body>\n\n</html>"
