CVE-2026-55110 Cross-site request forgery in Cloud Gateways
Attackers can exploit CORS misconfiguration to perform unauthorized actions on UniFi OS devices by tricking authenticated users into visiting malicious pages.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-55110?
CVE-2026-55110 is a high-severity vulnerability in Ubiquiti Inc Cloud Gateways, published on 2 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A malicious actor who lures an authenticated user to a malicious page could exploit a Cross-Origin Resource Sharing (CORS) misconfiguration found in UniFi OS to trigger actions in UniFi OS using that user's session.
Weakness: CWE-942
Which versions are affected by CVE-2026-55110?
It affects 30 products.
Products include Ui Enterprise Firewall Core Firmware, Ui Enterprise Fortress Gateway Firmware, Ui Enterprise Network Video Recorder Core Firmware, Ui Enterprise Network Video Recorder Firmware, Ui Unas 2 Firmware, Ui Unas 4 Firmware and 24 more.
How do I fix CVE-2026-55110?
No fix has been published for CVE-2026-55110 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-55110 being exploited?
There is no known exploitation of CVE-2026-55110 in the wild and no public exploit code.
Other vulnerabilities in Ubiquiti Inc Cloud Gateways
Sources
Also known as GHSA-fwmw-87x4-wjv5.