CVE-2026-45153

Nextcloud: PIN bypass in PassCodeActivity via back button

MEDIUM
4.6
CVSS Score
Published: June 1, 2026 at 04:37 PM UTC
Updated: July 22, 2026 at 07:37 AM UTC
Products not identified yet

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Severity
MEDIUM4.6
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

We have no canonical product record for this CVE. The source names may not have matched any product.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.6MEDIUMGitHub_M
Attack Vector
PHYSICAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-287

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