CVE-2026-45153 | Nextcloud is an open source content collaboration platform. … | CVSS 4.6 MEDIUM

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.

Metadata

CVE ID: CVE-2026-45153
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-08 20:44 UTC
Published: 2026-06-01 16:37 UTC
Last updated: 2026-06-01 17:53 UTC
Primary CWE: CWE-287
CWE-287: Improper Authentication
Vendor / Product: nextcloud / security-advisories
Sources: cve.org · NVD

Severity & Metrics

4.6 MEDIUM CVSS 3.1

CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
nextcloud	security-advisories	—	>= 33.0.0, < 33.1.0

Weakness (CWE)

CWE	Source	Description
CWE-287	cna	CWE-287: Improper Authentication

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.6	MEDIUM	3.1	cna	CVSS:3.1/AV:P/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

References (3)

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