CVE-2026-45153
Nextcloud: 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.
INFO
Published Date :
June 1, 2026, 5:17 p.m.
Last Modified :
June 1, 2026, 6:14 p.m.
Remotely Exploit :
No
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-45153
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the Nextcloud Files app to version 33.1.0.
- Apply updates for all affected instances.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45153.
| URL | Resource |
|---|---|
| https://github.com/nextcloud/android/pull/16896 | |
| https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2w7v-5299-3hw5 | |
| https://hackerone.com/reports/3625210 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45153 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45153
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45153 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45153 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Jun. 01, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N Added CWE CWE-287 Added Reference https://github.com/nextcloud/android/pull/16896 Added Reference https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2w7v-5299-3hw5 Added Reference https://hackerone.com/reports/3625210