The CVE-2025-27146 vulnerability in matrix-appservice-irc, a Node.js IRC bridge for Matrix, allows attackers to execute arbitrary IRC commands as the puppeted user. This vulnerability exists in versions up to 3.0.3 and arises due to insufficient validation of user-supplied input, enabling command injection. An attacker can exploit this flaw to inject and execute malicious IRC commands, but only within the scope of their own IRC user permissions. The issue has been resolved in version 3.0.4, which implements proper input sanitization and validation to prevent such exploits.
DailyCVE Form:
Platform: Matrix-Appservice-IRC
Version: Up to 3.0.3
Vulnerability: Arbitrary Command Execution
Severity: Critical
Date: 02/25/2025
(End of form)
What Undercode Say:
Analytics:
- CVSS 4.0 Score: 9.8 (Critical)
- Attack Vector: Network
- Exploitability: Low complexity
- Impact: High (confidentiality, integrity, availability)
Commands to Check Vulnerability:
1. Check installed version:
npm list matrix-appservice-irc
2. Update to patched version:
npm install [email protected]
Exploit Details:
- Attackers can inject IRC commands via crafted input.
- Example exploit payload:
[irc]
PRIVMSG channel :\x01ACTION malicious command\x01
[/irc]
Protection Measures:
1. Upgrade to version 3.0.4 immediately.
- Implement input validation and sanitization in custom integrations.
3. Monitor IRC logs for unusual command patterns.
References:
Mitigation Script:
// Example input sanitization function
function sanitizeInput(input) {
return input.replace(/[^\w\s]/gi, '');
}
Monitoring Tools:
- Use IRC log analyzers like `irc-logger` to detect anomalies.
- Implement SIEM solutions to monitor Matrix-Appservice-IRC activity.
End of Report.
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-27146
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