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HIGHCVE-2026-3861Published Modified CNA LY-Corporation

CVE-2026-3861: LINE client for iOS versions prior to 26

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.

Metrics

CVSS v4.0
7.1
Severity
HIGH
Fixed in
26.3.0
Affected Products
1

Fix available

26.3.0
Affected packages
  • LY Corporation / LINE client for iOS
    Fixed in 26.3.0
CVSS 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
References
CVE-2026-3861: LINE client for iOS versions prior to 26 | HarborGuard CVE