CVE-2021-21433: Remote code execution on discord-recon .dirsearch and .arjun commands due to improper input validation

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-04-09 · updated 2026-06-17
Weakness: CWE-94

Description

Discord Recon Server is a bot that allows you to do your reconnaissance process from your Discord. Remote code execution in version 0.0.1 would allow remote users to execute commands on the server resulting in serious issues. This flaw is patched in 0.0.2.

Affected products

DEMON1A Discord-Recon: before 0.0.2 — fixed in 0.0.2

How to fix

Upgrade to a fixed version: DEMON1A Discord-Recon 0.0.2. Check the vendor advisory for mitigations.

References

https://github.com/DEMON1A/Discord-Recon/commit/26e2a084679679cccdeeabbb6889ce120eff7e50
https://github.com/DEMON1A/Discord-Recon/issues/6
https://github.com/DEMON1A/Discord-Recon/security/advisories/GHSA-65fm-5x64-gv9x
https://github.com/DEMON1A/Discord-Recon/commit/26e2a084679679cccdeeabbb6889ce120eff7e50
https://github.com/DEMON1A/Discord-Recon/issues/6
https://github.com/DEMON1A/Discord-Recon/security/advisories/GHSA-65fm-5x64-gv9x

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