{"id":"GHSA-mj2c-8hxf-ffvq","summary":"Cocotais Bot has builtin .echo command injection","details":"### Summary\n\ufeff\nA command echoing feature in the framework allows users to indirectly trigger privileged behavior by injecting special platform tags. Specifically, an unauthorized user can use the `/echo \u003cqqbot-at-everyone /\u003e` command to cause the bot to send a message that mentions all members in the chat, bypassing any permission controls. This can lead to spam, disruption, or abuse of notification systems.\n\ufeff\n### Details\n\ufeff\nThe framework provides a command `/echo` that causes the bot to repeat any user-provided message verbatim in the group chat. However, the bot fails to sanitize or filter platform-specific control elements such as `\u003cqqbot-at-everyone /\u003e`, which, when included in a message, mentions everyone (i.e., @全体成员). While normal users are forbidden from using this tag in normal chats, the bot, which has higher privileges, is allowed to do so.\n\ufeff\nSince the `/echo` command blindly echoes any content, a user can exploit this by sending:\n\ufeff\n```\n/echo \u003cqqbot-at-everyone /\u003e\n```\n\ufeff\nThe bot will then send a message containing `\u003cqqbot-at-everyone /\u003e`, causing the platform to interpret it as an @全体成员 command, effectively allowing an unauthorized user to @everyone via the bot.\n\ufeff\n### PoC\n\ufeff\n1. Set up a chatbot using the affected framework.\n2. Join the chat that includes the bot as a regular user with **no permission to use @全体成员**.\n3. Send the following message in the chat:\n\ufeff\n```\n/echo \u003cqqbot-at-everyone /\u003e\n```\n4. The bot will respond by repeating the message, and the platform will interpret `\u003cqqbot-at-everyone /\u003e` as an @全体成员 mention.\n5. All the chat members receive a notification, despite the user lacking that permission.\n\ufeff\n\ufeff","aliases":["CVE-2025-47948"],"modified":"2025-05-19T16:42:21.709414Z","published":"2025-05-19T16:25:05Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2025-05-19T16:25:05Z","nvd_published_at":"2025-05-17T19:15:46Z","cwe_ids":["CWE-74"],"severity":"MODERATE"},"references":[{"type":"WEB","url":"https://github.com/cocotais/cocotais-bot/security/advisories/GHSA-mj2c-8hxf-ffvq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47948"},{"type":"WEB","url":"https://github.com/cocotais/cocotais-bot/commit/d1cf01a9a41b3131241d1833444b890c8d6e70b8"},{"type":"PACKAGE","url":"https://github.com/cocotais/cocotais-bot"}],"affected":[{"package":{"name":"cocotais-bot","ecosystem":"npm","purl":"pkg:npm/cocotais-bot"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.5.0-test2-hotfix"},{"fixed":"1.6.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/05/GHSA-mj2c-8hxf-ffvq/GHSA-mj2c-8hxf-ffvq.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"}]}