GHSA-mj2c-8hxf-ffvqPublished

Cocotais Bot has builtin .echo command injection

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cve-program · CVE-2025-47948

Published

Cocotais Bot is a QQ official robot framework based on qq-bot-sdk. Starting in version 1.5.0-test2-hotfix and prior to version 1.6.2, 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 <qqbot-at-everyone />` 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. Version 1.6.2 contains a patch for the issue.

Source published: 17 May 2025 18:42:24 UTC
Source modified: 19 May 2025 14:43:51 UTC
Saved here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

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CVSS 3.1 · 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

euvd · EUVD-2025-28138

Published

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EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

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datePublished: May 17, 2025, 6:42:24 PM

dateUpdated: May 19, 2025, 2:43:51 PM

Source published: May 17, 2025, 6:42:24 PM (timezone not stated)
Source modified: May 19, 2025, 2:43:51 PM (timezone not stated)
Saved here: 15 Nov 2026 04:33:13 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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EUVD CVSS 3.1 · 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

nvd · CVE-2025-47948

Published

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NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-74

Original publisher date fields

published: 2025-05-17T19:15:46.667

lastModified: 2026-06-17T09:28:53.100

Source published: 17 May 2025 19:15:46 UTC
Source modified: 17 Jun 2026 09:28:53 UTC
Saved here: 25 Oct 2026 02:24:54 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

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CVSS 3.1 · [email protected] · Secondary · 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L

osv · GHSA-mj2c-8hxf-ffvq

Published

### Summary A 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 <qqbot-at-everyone />` 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. ### Details The 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 `<qqbot-at-everyone />`, 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. Since the `/echo` command blindly echoes any content, a user can exploit this by sending: ``` /echo <qqbot-at-everyone /> ``` The bot will then send a message containing `<qqbot-at-everyone />`, causing the platform to interpret it as an @全体成员 command, effectively allowing an unauthorized user to @everyone via the bot. ### PoC 1. Set up a chatbot using the affected framework. 2. Join the chat that includes the bot as a regular user with **no permission to use @全体成员**. 3. Send the following message in the chat: ``` /echo <qqbot-at-everyone /> ``` 4. The bot will respond by repeating the message, and the platform will interpret `<qqbot-at-everyone />` as an @全体成员 mention. 5. All the chat members receive a notification, despite the user lacking that permission.

Source published: 19 May 2025 16:25:05 UTC
Source modified: 10 Sep 2026 03:50:57 UTC
Saved here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

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Source: osv · GitHub Advisory Database · CC-BY-4.0. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Publisher rating · MODERATE