Insecure permissions in foobnix Librera PDF Reader versionCode 7222 allows unauthorized attackers to arbitrarily write and truncate files in a shared

Summary

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.

Remediation

1. Inventory every Unknown product deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

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