CVE-2026-3861

LINE client for iOS versions prior to 26.3.0 contains a vulnerability in the in-app browser where opening a crafted web page can repeatedly trigger OS-level…

High · published April 16, 2026

CVSS v4.0
7.1
EPSS
0%
Percentile
26.8
In the wild
Unconfirmed
What it is

LINE client for iOS versions prior to 26.3.0 contains a vulnerability in the in-app browser where opening a crafted web page can repeatedly trigger OS-level dialogs due to insufficient safeguards when handling arbitrary URL schemes, potentially causing the iOS device to become temporarily inoperable.

The record
Technical detail
CVSS v4.0
7.1 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
EPSS
0.00345 · 26.8th percentile
Published
2026-04-16T05:54Z
EPSS history
Timeline
  • 16 APR 05:54Z
    LINE client for iOS versions prior to 26.3.0 contains a vulnerability in the in-app browser where opening a crafted web page can repeatedly trigger OS-level…
    cvelistv5