dbcve.org
Discord ReconApplication · Demon1a

CVE-2021-29461

HIGH · 8.8 CVSS v3.1 Published 2021-04-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Discord Recon Server is a bot that allows one to do one's reconnaissance process from one's Discord. A vulnerability in Discord Recon Server prior to 0.0.3 could be exploited to read internal files from the system and write files into the system resulting in remote code execution. This issue has been fixed in version 0.0.3. As a workaround, one may copy the code from `assets/CommandInjection.py` in the Discord Recon Server code repository and overwrite vulnerable code from one's own Discord Recon Server implementation with code that contains the patch.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

Command injection vulnerability in Discord Recon Server versions prior to 0.0.3 allows unauthenticated attackers to read arbitrary files from the system and write files to the system, leading to complete remote code execution. The vulnerability stems from unsanitized user input being passed to system calls.

MitigationUpdate to version 0.0.3 or manually apply the patch by replacing vulnerable code with the fixed implementation from `assets/CommandInjection.py` in the repository.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Discord ReconApplication
Affected:= 0.0.2

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Locate the Demon1a Discord Recon installation
    Search for files or directories named 'Demon1a', 'discord-recon', or check common installation paths like /opt/, ~/, or the working directory where the application was cloned or installed.
    Affected if The application is present on the system
  2. Identify the installed version
    Check for a version file, package.json, setup.py, or any version标识 within the application files. Look for a file containing '0.0.2' or '0.0.3' as the version number.
    Affected if The version is 0.0.2 or earlier
  3. Examine the CommandInjection.py file in assets/
    Locate the assets/CommandInjection.py file within the application directory. If present, inspect the code to see if it contains unsanitized user input being passed to system calls such as os.system(), subprocess.run(), or similar functions.
    Affected if The file contains vulnerable code patterns with unsanitized input to system calls
  4. Verify the server is running and exposed
    Check if the Discord Recon Server component is actively running and accessible over the network. Look for listening ports or active processes related to the application.
    Affected if The server component is running and accepting external input

The environment is affected if Demon1a Discord Recon version 0.0.2 is installed and the vulnerable code handling unsanitized user input in system calls is present and exposed.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update to version 0.0.3 or manually apply the patch by replacing vulnerable code with the fixed implementation from `assets/CommandInjection.py` in the repository.

Recommended fix Moderate confidence

version 0.0.3

  1. Stop the running Discord Recon bot service
  2. Upgrade Discord Recon to version 0.0.3 using the package manager (e.g., pip install discord-recon==0.0.3 or pip install -U discord-recon)
  3. Verify the installed version is 0.0.3
  4. Restart the Discord Recon bot service

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Discord Recon Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing3.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,390
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-29461 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data