CVE-2026-1089 User‑Controlled HTTP Header In Fortra's GoAnywhere MFT Allows Arbitrary DNS Lookups
Attackers can trigger arbitrary DNS lookups and information disclosure via user-controlled HTTP headers in Fortra GoAnywhere MFT.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1089?
CVE-2026-1089 is a medium-severity server-side request forgery vulnerability in Fortra GoAnywhere MFT, published on 21 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
User‑Controlled HTTP Header in Fortra's GoAnywhere MFT prior to version 7.10.0 allows attackers to trigger a DNS lookup, as well as DNS Rebinding and Information Disclosure.
Weakness: CWE-74
Which versions are affected by CVE-2026-1089?
It affects 1 product.
Products include Fortra Goanywhere Managed File Transfer.
How do I fix CVE-2026-1089?
No fix has been published for CVE-2026-1089 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-1089 being exploited?
There is no known exploitation of CVE-2026-1089 in the wild and no public exploit code.
Other vulnerabilities in Fortra GoAnywhere MFT
- CVE-2025-10035 Fortra GoAnywhere MFT Deserialization of Untrusted Data
- CVE-2023-0669 Fortra GoAnywhere MFT Remote Code Execution
- CVE-2024-0204 Authentication Bypass in GoAnywhere MFT
- CVE-2025-14362 GoAnywhere MFT SFTP Service Login Vulnerable to Brute Force Attack Under Certain Circumstances
- CVE-2024-25157 Authentication bypass in GoAnywhere MFT prior to 7.6.0
Sources
Also known as GHSA-6x5f-r479-qh4p.