CVE-2026-45153Nextcloud: PIN bypass in PassCodeActivity via back button

Description

Nextcloud is an open source content collaboration platform. From version 33.0.0 to before version 33.1.0, after unlocking a locked Android phone the back-button could be used to bypass the Nextcloud Files app PIN. This issue has been patched in version 33.1.0.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2w7v-5299-3hw5
• https://github.com/nextcloud/android/pull/16896
• https://hackerone.com/reports/3625210