Is CVE-2026-112148 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-112148 being exploited in the wild.

How severe is CVE-2026-112148?

Informational severity, published 20 October 2026.

Which products and versions are affected?

LINE LIFF SDK 2.20.0 through 2.31.0.

Is there a fix for CVE-2026-112148?

Yes: fixed in 2.31.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-112148 attacked?

It is attacked over the network.

Am I affected by CVE-2026-112148?

Check whether you run LINE LIFF SDK at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-112148: LINE LIFF SDK DOM-based cross-site scripting

CVE-2026-112148 · Severity: info · Published 2026-10-20

LIFF SDK is a JavaScript library that enables LINE messaging platform integration in web applications. A DOM-based cross-site scripting flaw in versions 2.20.0–2.31.0 allows attackers to execute arbitrary JavaScript when a user opens a specially crafted URL, potentially compromising authentication tokens, stealing application data, or performing unauthorized actions in the user's session.

Vendors: LINE.

Quick answers

Is CVE-2026-112148 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-112148 being exploited in the wild.
How severe is CVE-2026-112148?: Informational severity, published 20 October 2026.
Which products and versions are affected?: LINE LIFF SDK 2.20.0 through 2.31.0.
Is there a fix for CVE-2026-112148?: Yes: fixed in 2.31.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-112148 attacked?: It is attacked over the network.
Am I affected by CVE-2026-112148?: Check whether you run LINE LIFF SDK at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 2.31.1

Technical details

A DOM-based XSS vulnerability exists in LIFF SDK versions 2.20.0 through 2.31.0 triggered when a user opens a malicious URL in an external browser. The vulnerability allows arbitrary JavaScript execution in the origin of the affected LIFF application, enabling token and data theft or unauthorized session actions. The flaw is fixed in version 2.31.1.

Affected products

LINE LIFF SDK 2.20.0 through 2.31.0

Timeline

2026-10-20: disclosed

References

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