CVE-2026-107053

Insecure permissions in foobnix Librera PDF Reader versionCode 7222 allows unauthorized attackers…

Risk score: 60/100
CVSS: 9.1 v3.1
Exploit chance (30 days): 0.2%
Published: 29 Oct 2026

Open in the live forecast Today's forecast

What to know

What it is: 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.
Affected: See advisory
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Why it is Amber

CVSS 9.1 critical
Remotely exploitable without logging in

References

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

Original 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.

Last activity 29 Oct 2026. Patch Forecast updates every hour.