CVE-2026-3861

CVSS 7.1 HIGHEPSS 0.3%CWE-451

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.

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

Affected products

LY Corporation · LINE client for iOS

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References

https://hackerone.com/reports/3422905