TI-2024-05332 Aliases CVE-2024-5739 GHSA-9hrm-g973-phrr

Cross-site scripting in LINE client for iOS

LOW 27CWE-79Published 2024-06-12 · Updated 2025-03-28

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The in-app browser of LINE client for iOS versions below 14.9.0 contains a Universal XSS (UXSS) vulnerability. This vulnerability allows for cross-site scripting (XSS) where arbitrary JavaScript can be executed in the top frame from an embedded iframe on any displayed web site within the in-app browser. The in-app browser is usually opened by tapping on URLs contained in chat messages, and for the attack to be successful, the victim must trigger a click event on a malicious iframe. If an iframe embedded in any website can be controlled by an attacker, this vulnerability could be exploited to capture or alter content displayed in the top frame, as well as user session information. This vulnerability affects LINE client for iOS versions below 14.9.0 and does not affect other LINE clients such as LINE client for Android. Please update LINE client for iOS to version 14.9.0 or higher.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00269 19th percentileScored 2026-11-07

Fix Fixed LINE client for iOS (LINE Corporation): 14.9.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
LINE Corporation	LINE client for iOS	14.0.0 to before 14.9.0	14.9.0	Patch available	CNA

LINE client for iOS VendorLINE Corporation Affected 14.0.0 to before 14.9.0 Fixed in 14.9.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:linecorp:line::::::iphone_os::*	14.0.0 to before 14.9.0	Vulnerable	Linecorp

cpe:2.3:a:linecorp:line:*:*:*:*:*:iphone_os:*:* Versions 14.0.0 to before 14.9.0 Vulnerable ·Linecorp

Remediation

Fix · CNA LINE client for iOS (LINE Corporation) Fixed in 14.9.0

Timeline

2026-10-02 Threatist record created from CVE-2024-5739
2026-10-03 Alias added: GHSA-9hrm-g973-phrr

References

Advisory 1

https://hackerone.com/reports/2284129

TI-2024-01613 Improper authentication in LINE Corporation Armeria CVSS 3.1CRITICAL 9.1
TI-2023-05112 Improper certificate validation in LINE client for iOS CVSS 3.1CRITICAL 9.8
TI-2024-01060 Cross-site scripting in LINE Corporation Central Dogma CVSS 3.1CRITICAL 9.3
TI-2023-19873 Paths contain matrix variables bypass decorators CVSS 3.1HIGH 7.5
TI-2022-19973 LINE client for iOS before 12.17.0 might be crashed by sharing an invalid shared key of e2ee in group chat. CVSS 3.1HIGH 7.5
TI-2021-15992 Missing authorization in LINE Corporation Central Dogma CVSS 3.1HIGH 8.8

See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences