CVE-2026-45285

[CVE catalog]

Severity

Medium · CVSS 6.8CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Published

May 11, 2026, 10:00:00 PM UTC

Source

[NVD] · [CVE record]

EPSS

0.29% · Oct 25, 2026

A flaw was found in Nextcloud. When a user shares a folder or file with a Nextcloud Team that includes an external member, the system automatically generates a public link for that external member. This link, which is not visible to the folder owner, grants the same permissions as the Team's access. An attacker who obtains this unlisted link can access, modify, delete, reshare, and download all data within the shared folder without requiring further authentication, leading to unauthorized data access and potential data manipulation. Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.