CVE-2026-60105

High

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.

SeverityHigh

CVSS8.6

Exploit probability—

ProductMonsta FTP

PublishedJul 8, 2026

First seenJul 8, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

Monsta Limited of New Zealand Monsta FTP2.14.5 or later

Patches

monstaftp.com/notes/

Affected products

Product	Affected versions	Fixed in
Monsta Limited of New Zealand Monsta FTP	v < 2.14.5	2.14.5

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