Security Alert: Critical RainLoop VulnerabilityA critical vulnerability was recently disclosed in RainLoop webmail, allowing attackers to achieve full server compromise. The exploit chain includes SSRF (Server-Side Request Forgery) to access sensitive files, extraction of cryptographic keys, and then remote code execution via custom PHP object injection.
Key points:
• All versions up to 1.17.0 are vulnerable
• The project is archived — no patches or updates will be released
• Attackers can fully control your server and access all mail data
If you’re still running RainLoop, your infrastructure is at severe risk.
Recommendation: Migrate immediately to actively maintained and secure alternatives like Roundcube, which is included and fully supported in FASTPANEL.Need assistance with migration or securing your mail server? Contact us anytime — our engineers are ready to help.