CVE-2026-55110

HIGH

Ubiquiti INC UniFi OS Server - Permissive Cross-domain Security Policy with Untrusted Domains

Title source: rule
STIX 2.1

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.

References (1)

Core 1

Scores

CVSS v3 7.5
EPSS 0.0014
EPSS Percentile 3.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-942
Status published
Products (42)
Ubiquiti Inc/Cloud Gateways < 5.1.19
Ubiquiti Inc/Cloud Keys < 5.1.19
Ubiquiti Inc/Dream Machines < 5.1.19
Ubiquiti Inc/Dream Routers < 5.1.19
Ubiquiti Inc/Dream Wall < 5.1.19
Ubiquiti Inc/Enterprise Firewall Core < 5.1.19
Ubiquiti Inc/Enterprise Fortress Gateway < 5.1.19
Ubiquiti Inc/Enterprise Video Recorders < 5.1.19
Ubiquiti Inc/Express 7 < 5.1.19
Ubiquiti Inc/Network Attached Storage < 5.1.19
... and 32 more
Published Jul 02, 2026
Tracked Since Jul 02, 2026