{"id":"CVE-2026-107053","title":"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.","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.","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cvssSource":"adp","ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"total","timestamp":"2026-11-03T14:26:16.360825Z"},"exploitAvailable":true,"published":"2026-10-29","updated":"2026-11-03","sourceUpdated":"2026-11-03T14:26:28.273Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107053","references":[{"url":"https://f-droid.org/packages/com.foobnix.pro.pdf.reader/"},{"url":"https://github.com/foobnix/LibreraReader"},{"url":"https://github.com/FFG0d/fdroid-android-advisories/blob/main/advisories/CVE-2026-107053.md"}],"tags":["cve.org","exploit-available"],"epss":0.00361,"epssPercentile":0.3004,"ingestedAt":"2026-11-01T21:01:32.737Z","slug":"CVE-2026-107053","body":"## Overview\n\nInsecure 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":62,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":233665,"id":"CVE-2026-107053","ts":1793907151634,"field":"exploit_available","old":"false","new":"true"},{"seq":233664,"id":"CVE-2026-107053","ts":1793907151634,"field":"cvss","old":null,"new":"9.1"},{"seq":233663,"id":"CVE-2026-107053","ts":1793907151634,"field":"severity","old":"none","new":"critical"}]}