Improper Authorization in Handler for Custom URL Scheme

A vulnerability has been found in Genspark AI Workspace App 2.8.4 on Android. This vulnerability affects unknown code of the component ai.mainfunc.genspark. The manipulation leads to improper authorization in handler for custom url scheme. The attack can only be performed from a local environment. The vendor was contacted early about this disclosure but did not respond in any way.Show less

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.Show less

Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an escalation of privilege via network access.Show less

Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an escalation of privilege via network access.Show less

A vulnerability was identified in Groww Stock, Mutual Fund, Gold App up to 20260805 on Android. This affects an unknown part of the component WebView URL Handler. The manipulation leads to improper authorization in handler for custom url scheme. It is possible to launch the attack on the physical device. The complexity of an attack is rather high. It is indicated that the exploitability is difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.Show less

Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Mattermost Desktop App which allows a malicious server owner to repeated crash the application via calling {{window.open('javascript:alert()');}}. Mattermost Advisory ID: MMSA-2026-00618Show less

Mobile Next is an MCP server for mobile development and automation. Prior to 0.0.50, the mobile_open_url tool in mobile-mcp passes user-supplied URLs directly to Android's intent system without any scheme validation, allowing execution of arbitrary Android intents, including USSD codes, phone calls, SMS messages, and content provider access. This vulnerability is fixed in 0.0.50.Show less

Vikunja is an open-source self-hosted task management platform. Starting in version 0.21.0 and prior to version 2.2.0, the Vikunja Desktop Electron wrapper passes URLs from `window.open()` calls directly to `shell.openExternal()` without any validation or protocol allowlisting. An attacker who can place a link with `target="_blank"` (or that otherwise triggers `window.open`) in user-generated content can cause the victim's operating system to open arbitrary URI schemes, invoking local applications, opening local files, or triggering custom protocol handlers. Version 2.2.0 patches the issue.Show less

Mattermost Desktop App versions <=6.0 6.2.0 5.2.13.0 fail to validate help links which allows a malicious Mattermost server to execute arbitrary executables on a user’s system via the user clicking on certain items in the Help menu Mattermost Advisory ID: MMSA-2026-00577Show less

Improper authorization in handler for custom URL scheme issue in "Yahoo! Shopping" App for Android versions prior to 14.15.0 allows a remote unauthenticated attacker may lead a user to access an arbitrary website on the vulnerable App. As a result, the user may become a victim of a phishing attack.Show less

Opening maliciously-crafted URLs in Firefox from other apps such as Safari could have allowed attackers to spoof website addresses if the URLs utilized non-HTTP schemes used internally by the Firefox iOS client. This vulnerability was fixed in Firefox for iOS 139.Show less

Improper authorization in handler for custom URL scheme issue in "Shonen Jump+" App for Android versions prior to 4.0.0 allows an attacker to lead a user to access an arbitrary website via the vulnerable App. As a result, the user may become a victim of a phishing attack.Show less

Improper authorization in handler for custom URL scheme issue in 'Skylark' App for Android 6.2.13 and earlier and 'Skylark' App for iOS 6.2.13 and earlier allows an attacker to lead the application to access an arbitrary web site via another application installed on the user's device.Show less

Improper authorization in handler for custom URL scheme issue in "@cosme" App for Android versions prior 5.69.0 and "@cosme" App for iOS versions prior to 6.74.0 allows an attacker to lead a user to access an arbitrary website via the vulnerable App. As a result, the user may become a victim of a phishing attack.Show less

'Rakuten Ichiba App' for Android 12.4.0 and earlier and 'Rakuten Ichiba App' for iOS 11.7.0 and earlier are vulnerable to improper authorization in handler for custom URL scheme. An arbitrary site may be displayed on the WebView of the product via Intent from another application installed on the user's device. As a result, the user may be redirected to an unauthorized site, and the user may become a victim of a phishing attack.Show less

Improper authorization in handler for custom URL scheme issue in 'ZOZOTOWN' App for Android versions prior to 7.39.6 allows an attacker to lead a user to access an arbitrary website via another application installed on the user's device. As a result, the user may become a victim of a phishing attack.Show less

An attacker could retrieve sensitive files (medical images) as well as plant new medical images or overwrite existing medical images on a MicroDicom DICOM Viewer system. User interaction is required to exploit this vulnerability.Show less