CVE-2026-47196: Quest Bot: Empty automod rule causes every guild message to be deleted

Severity: high (CVSS 8.4 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-12 · updated 2026-10-26
Weakness: CWE-20

Description

Quest Bot is an opensource Discord Bot. Prior to version 1.1.6, the automod add command trims user input but does not reject an empty result. Adding a rule containing only whitespace stores an empty word. The message listener later checks content.includes(""), which is always true, causing the bot to delete every non-bot guild message. This issue has been patched in version 1.1.6.

Affected products

duck-organization questbot: before 1.1.6

References

https://github.com/duck-organization/questbot/releases/tag/questbot-v1.1.6
https://github.com/duck-organization/questbot/security/advisories/GHSA-fgwg-6px5-cxp5
https://github.com/duck-organization/questbot/security/advisories/GHSA-fgwg-6px5-cxp5

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