CVE-2025-62378
📋 TL;DR
A logic flaw in CommandKit's message command handler exposes the alias name instead of the canonical command name in middleware and execution contexts. This affects Discord bot developers who rely on ctx.commandName for security logic like permission checks, potentially allowing unauthorized command execution. Only message commands using aliases in versions 1.2.0-rc.1 through 1.2.0-rc.11 are vulnerable.
💻 Affected Systems
- CommandKit (discord.js meta-framework)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could bypass permission checks and execute privileged commands by using aliases, leading to unauthorized bot actions, data exposure, or administrative control.
Likely Case
Developers' middleware logic fails to properly restrict commands when invoked via aliases, causing inconsistent access control and potential privilege escalation.
If Mitigated
With proper input validation and canonical command name verification, the impact is limited to minor logic inconsistencies in middleware.
🎯 Exploit Status
Exploitation requires knowledge of command aliases and depends on how developers implemented middleware security checks.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.0-rc.12
Vendor Advisory: https://github.com/underctrl-io/commandkit/security/advisories/GHSA-fhwm-pc6r-4h2f
Restart Required: No
Instructions:
1. Update CommandKit to version 1.2.0-rc.12 or later. 2. Run 'npm update commandkit' or 'yarn upgrade commandkit'. 3. No restart required as changes are loaded at runtime.
🔧 Temporary Workarounds
Middleware Command Name Validation
allModify middleware to compare ctx.commandName against both canonical names and aliases before performing security checks.
// In middleware: const canonicalNames = ['actualCommand1', 'actualCommand2']; const aliases = {'alias1': 'actualCommand1'}; const commandToCheck = aliases[ctx.commandName] || ctx.commandName; if (!canonicalNames.includes(commandToCheck)) { return; }
🧯 If You Can't Patch
- Disable command aliases for all message commands in vulnerable versions.
- Implement additional validation layer that maps aliases to canonical names before any security logic executes.
🔍 How to Verify
Check if Vulnerable:
Check package.json for CommandKit version between 1.2.0-rc.1 and 1.2.0-rc.11, and verify if message commands use aliases with middleware relying on ctx.commandName.Check Version:
npm list commandkit | grep commandkitVerify Fix Applied:
After updating, test that ctx.commandName returns the canonical name when invoking commands via aliases in both middleware and command execution.📡 Detection & Monitoring
Log Indicators:
- Unexpected command execution via aliases that should be blocked by middleware
- Mismatches between logged command names and expected canonical names in audit logs
Network Indicators:
- Unusual patterns of alias usage for commands that typically use canonical names
SIEM Query:
source="discord_bot" AND (command_name NOT IN ["canonical_command_list"]) AND alias_used=true