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CVE-2026-45153

Nextcloud: PIN bypass in PassCodeActivity via back button

Published: Jun 1, 2026Updated: Jun 1, 2026 Sources: CVE List NVD
NVD MITRE
4.6CVSS
MEDIUM

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

CVSS Vector Breakdown

AV:PAC:HPR:LUI:NS:UC:HI:LA:N
Exploitability
AV:PAttack Vector
Physical
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None

Weaknesses

CWE-287

Affected Products

security-advisories
nextcloud

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

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

Timeline

Published
Jun 1, 2026
Last Updated
Jun 1, 2026

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