CVE-2026-45153
Nextcloud: PIN bypass in PassCodeActivity via back button
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.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Nextcloud: PIN bypass in PassCodeActivity via back button
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.
- Record
CVE-2026-45153- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
EUVDEUVD-2026-33672
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.
- Record
EUVD-2026-33672- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-45153- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
OSV
Nextcloud: PIN bypass in PassCodeActivity via back button
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.
- Record
CVE-2026-45153- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
OSVBIT-nextcloud-2026-45153 No score
Nextcloud: PIN bypass in PassCodeActivity via back button
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.
- Record
BIT-nextcloud-2026-45153- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
nextcloudBitnami |
33.0.0 up to 33.1.0 | 33.1.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-45153 is a medium vulnerability (CVSS 4.6) in Kiteworks Security-advisories, published June 1, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 4th percentile. Fixed in nextcloud 33.1.0.