CVE-2026-60105
HighExploitedMonsta 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.
Published Jul 8, 2026 · Updated Jul 14, 2026 · Also known as EUVD-2026-42427, GHSA-hf3x-9vx4-94qv
Key Facts
Patch immediately- CVE-2026-60105 is a high-severity vulnerability (CVSS 7.7 v4) affecting Monsta FTP.
- It is exploited in the wild, listed in Industry KEV feed since Sep 7, 2026. No public exploit code is known.
- EPSS estimates a 1.5% probability of exploitation in the next 30 days.
- Fixed versions are available, including Monsta FTP 2.14.5.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v4
7.7
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
EPSS (30-day exploit likelihood)
1.5%
Higher than 74.0% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
None known
Get the full CVE-2026-60105 brief as a PDF
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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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Sep 7, 2026 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Monsta FTP | See advisory | 2.14.5 |
Patched Releases
Monsta FTP
2.14.5
Timeline
Publicly disclosed
Jul 8, 2026
Last updated
Jul 14, 2026
Added to Industry KEV feed
Sep 7, 2026
Weakness Type
- CWE-918 Server-Side Request Forgery (SSRF)
References
FAQ
Common Questions.
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.
Affected: Monsta FTP. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Sep 7, 2026.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Monsta FTP 2.14.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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