CVE-2026-1089 — Information Disclosure
CVE-2026-1089 — 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.
What This Means For You
- If your environment is affected by CWE-74, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-1089 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Fortra GoAnywhere MFT DNS Lookup Triggered by HTTP Header — CVE-2026-1089
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-1089 | vulnerability | CVE-2026-1089 |
| CWE-74 | weakness | CWE-74 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 21, 2026 at 18:16 UTC |
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