CVE-2026-47171 Quest Bot: Reminder messages allow stored mass mentions through `@everyone` and `@here`
Attackers can trigger mass mentions via stored reminders, causing notification spam and potential service disruption for Discord server members.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47171?
CVE-2026-47171 is a high-severity vulnerability in duck-organization quest-bot, published on 11 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Quest Bot is an opensource modern Discord Bot built for moderation, utilities and support. Prior to version 1.0.3, a normal user can create a reminder whose message contains @everyone or @here. When the reminder triggers, the bot sends the stored message back into the channel without suppressing mass mentions. If the bot has permission to mention everyone, the reminder can ping the entire server or channel later. This issue has been patched in version 1.0.3.
Weakness: CWE-116
Which versions are affected by CVE-2026-47171?
How do I fix CVE-2026-47171?
No fix has been published for CVE-2026-47171 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-47171 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47171 exists.
Sources
Also known as GHSA-vmgg-f3m4-6fcv.