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LINE Client for iOS In-App Browser Denial-of-Service Vulnerability

Vulnerability

A denial-of-service vulnerability has been identified in the LINE client for iOS, affecting versions prior to 26.3.0. The issue arises in the in-app browser, where opening a specially crafted web page can repeatedly trigger operating system-level dialogs. This behavior has the potential to cause the iOS device to become temporarily unresponsive.

Impact

Exploitation of this vulnerability can lead to a denial-of-service condition, causing the iOS device to become temporarily inoperable.

Added: Apr 16, 2026, 7:39 AM
Updated: Apr 16, 2026, 7:39 AM

Vulnerability Rating

Custom Algorithm
spread
8.4
impact
0.6
exploitability
4.2
remediation
0.0
relevance
6.0
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.