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CVE-2026-3861

MEDIUM
6.5
CVSS Score
Published: April 16, 2026 at 05:54 AM UTC
Updated: October 26, 2026 at 09:10 PM UTC
1 product affected across 1 vendorLine

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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, potentially causing the iOS device to become temporarily inoperable.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Line· Linecorp
95%
v < 26.3.0
Affected range stops below 26.3.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Permissions Required
Source: cverecord
https://hackerone.com/reports/3422905

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMLY-Corporation
Vector?

Quick Info

StatusANALYZED
CWE
CWE-451

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