PT-2026-45475

CVE-2026-45264

Published

2026-06-01

Updated

2026-06-01

Description by

CVSS 3.1

4.3

Medium

MetricsAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Nextcloud versions 17.0.0 through 17.0.14 Nextcloud versions 18.0.0 through 18.1.11 Nextcloud versions 19.0.0 through 19.1.15 Nextcloud versions 20.0.0 through 20.1.10 Nextcloud versions 21.0.0 through 21.0.3

Description An Access Control List (ACL) permission bypass exists in team folders. A user granted READ and CREATE permissions, but lacking UPDATE permissions, can unauthorizedly rename files within the team folder.

Recommendations Update to version 17.0.15 Update to version 18.1.12 Update to version 19.1.16 Update to version 20.1.11 Update to version 21.0.4

Exploitability

Exploit

Fix

Impacts

Researchers

34Selen

Vendors

Affected products

Weakness enumeration

CWE-284: Improper Access Control

Related identifiers