SSRF in Monsta Limited Of New Zealand FTP
CVE-2026-60105
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.015 · change: -0.003
Affected products
- Monsta Limited Of New Zealand FTP — versions 0
Weakness classification (CWE)
References
- www.monstaftp.com/notes/ (release-notes, patch)
- www.vulncheck.com/advisories/monsta-ftp-ssrf-via-ipv4-mapped-ipv6-address-bypass (third-party-advisory)
- www.vulncheck.com/blog/monsta-ftp-ssrf-ipv6-blocklist-bypass (technical-description, exploit)
Frequently asked questions
- What is CVE-2026-60105?
- CVE-2026-60105 is a high-severity vulnerability in Monsta Limited Of New Zealand FTP, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.6/10. Published 2026-07-08.
- How severe is CVE-2026-60105?
- High severity. CVSS v3 base score is 8.6 out of 10.