Vulnerability Description
Monsta FTP before 2.14.5 contains a server-side request forgery vulnerability in the fetchRemoteFile action caused by an incomplete IP blocklist check in the isBlockedIP() function, which fails to detect embedded IPv4 addresses within IPv4-mapped IPv6 addresses. An unauthenticated attacker can obtain a CSRF token from the public getSystemVars endpoint and submit a fetchRemoteFile request with a source URL resolving to an IPv4-mapped address, causing the server to issue HTTP requests to internal services and write responses to an attacker-controlled FTP destination, enabling retrieval of cloud instance metadata credentials.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://www.monstaftp.com/notes/
- https://www.vulncheck.com/advisories/monsta-ftp-ssrf-via-ipv4-mapped-ipv6-addres
- https://www.vulncheck.com/blog/monsta-ftp-ssrf-ipv6-blocklist-bypass
FAQ
What is CVE-2026-60105?
CVE-2026-60105 is a vulnerability with a CVSS score of 8.6 (HIGH). Monsta FTP before 2.14.5 contains a server-side request forgery vulnerability in the fetchRemoteFile action caused by an incomplete IP blocklist check in the isBlockedIP() function, which fails to det...
How severe is CVE-2026-60105?
CVE-2026-60105 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-60105?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.