CVE-2026-12189 Moovit Bus & Public Transit App com.tranzmate improper authorization in handler for custom url scheme

Medium 4.8 Published Updated

Local attackers can bypass authorization checks in the custom URL scheme handler of the Moovit Android app to perform unauthorized actions.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-12189?

CVE-2026-12189 is a medium-severity missing authorization vulnerability in Moovit Bus & Public Transit App, published on 14 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A flaw has been found in Moovit Bus & Public Transit App 1.18 on Android. This affects an unknown part of the component com.tranzmate. Executing a manipulation can lead to improper authorization in handler for custom url scheme. The attack can only be executed locally. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-939, CWE-285

Which versions are affected by CVE-2026-12189?

How do I fix CVE-2026-12189?

No fix has been published for CVE-2026-12189 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-12189 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-12189 exists.

Sources

Also known as GHSA-g5v4-4fxp-3rxp.

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