CVE-2026-3861 | THREATINT

Description

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.

PUBLISHED Reserved 2026-03-10 | Published 2026-04-16 | Updated 2026-05-22 | Assigner LY-Corporation

HIGH: 7.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Problem types

CWE-400

Product status

Default status

affected

26.3.0 (custom) before *

unaffected

References

hackerone.com/reports/3422905

cve.org (CVE-2026-3861)

nvd.nist.gov (CVE-2026-3861)

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