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GitHub gist posts Android clipboard-read toast overlay proof of concept
A Nov. 13 GitHub gist labeled an Android clipboard-read vulnerability proof of concept fires extra toasts on clip access; a related Google Issue Tracker request for per-app clipboard permission remains assigned.
A GitHub gist posted Friday by account dethmasque is titled an Android clipboard-read vulnerability proof of concept and includes sample code that reads clipboard text then shows two developer toast messages1.
The Compose sample, package com.example.toniclipboardtest, calls ClipboardManager.getPrimaryClip on first launch and when the window regains focus, then runs Toast.makeText twice1. The gist does not include a CVE number or a Google advisory1.
Google's public Issue Tracker still lists a related Feature Request, 536063274, opened July 18, 2026, asking for per-app clipboard-read permission in addition to the system toast2. A Google assignee marked the issue Assigned; the public metadata shows priority P3 and severity S3, with no Won't Fix or Fixed status on the page2.
Android developer documentation says that from Android 12 (API 31), a toast is shown when an app accesses clipboard data, and that background clipboard access has been restricted since Android 103. The same page describes EXTRA_IS_SENSITIVE flags for keyboard previews; it does not discuss overlaying the system toast with other toasts3.
WhatsNewPaper did not run the gist on a device. Whether extra toasts hide the system clipboard-read notice on current Android builds is not established in the live documents reviewed1,3.
Sources
How it’s being reported
3 sourcesFirst reported by
Android Developers
Android Clipboard Read Vulnerability POC
Proof-of-concept app that reads clipboard text and overlays custom toasts
Account dethmasque posted Kotlin that reads the clipboard then shows two developer toasts.
Leaves out Google's response or a CVE identifier
Feature Request: add clipboard access control
Permission model rather than a confirmed vulnerability
Public Android feature request for per-app clipboard permission remains Assigned, P3.
Leaves out Any Won't Fix or CVE decision
Secure Clipboard Handling
Documented toast and sensitive-clip flags
Google docs: Android 12 shows a toast when another app reads clipboard data.
Leaves out Whether extra app toasts can hide the system toast
Where they agree
- Android 12 documents a toast when another app reads clipboard data [3], which the Issue Tracker request also cites [2].
Where they differ
Whether the behavior is a vulnerability Google declined to fix