CVE-2026-55110
Received Received - Intake

Cross-Site Request Forgery in UniFi OS

Publication date: 2026-07-02

Last updated on: 2026-07-02

Assigner: HackerOne

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.

CVSS Scores

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Meta Information

Published
2026-07-02
Last Modified
2026-07-02
Generated
2026-07-02
AI Q&A
2026-07-02
EPSS Evaluated
N/A
NVD
CVE-2026-55110
EUVD
EUVD-2026-41388

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ubiquiti unifi_os *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-942 The product uses a web-client protection mechanism such as a Content Security Policy (CSP) or cross-domain policy file, but the policy includes untrusted domains with which the web client is allowed to communicate.

Attack-Flow Graph

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Executive Summary

This vulnerability is a Cross-Origin Resource Sharing (CORS) misconfiguration in UniFi OS. It allows a malicious actor to exploit the system by tricking an authenticated user into visiting a malicious webpage. When the user visits this page, the attacker can use the user's session to trigger actions within UniFi OS without their consent.

Impact Analysis

The vulnerability can lead to unauthorized actions being performed in UniFi OS using the session of an authenticated user. This can result in a high impact on confidentiality, integrity, and availability of the system, as indicated by the CVSS score. An attacker could potentially manipulate or disrupt the system by leveraging the victim's session.

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