Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.2, and 33.0.0 to before 33.0.1, the files_lock app did not properly validate the ownership of files when processing DAV lock and unlock requests. An authenticated user could lock or unlock files belonging to other users by targeting their absolute WebDAV paths. Additionally, lock tokens were disclosed to unauthorized callers in error responses, allowing attackers to remove token-based locks placed by other users' client applications. It is recommended that the Nextcloud Server is upgraded to 32.0.2 or 33.0.1. It is recommended that the Nextcloud Enterprise Server is upgraded to 31.0.14.4 or 32.0.2 or 33.0.1
Metrics
Affected Vendors & Products
References
History
Wed, 03 Jun 2026 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Nextcloud nextcloud Server
|
|
| CPEs | cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:* cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:* |
|
| Vendors & Products |
Nextcloud nextcloud Server
|
Wed, 03 Jun 2026 02:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Nextcloud
Nextcloud files Lock |
|
| Vendors & Products |
Nextcloud
Nextcloud files Lock |
Mon, 01 Jun 2026 22:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Mon, 01 Jun 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Nextcloud is an open source content collaboration platform. In Nextcloud Server from versions 32.0.0 to before 32.0.2, and 33.0.0 to before 33.0.1, the files_lock app did not properly validate the ownership of files when processing DAV lock and unlock requests. An authenticated user could lock or unlock files belonging to other users by targeting their absolute WebDAV paths. Additionally, lock tokens were disclosed to unauthorized callers in error responses, allowing attackers to remove token-based locks placed by other users' client applications. It is recommended that the Nextcloud Server is upgraded to 32.0.2 or 33.0.1. It is recommended that the Nextcloud Enterprise Server is upgraded to 31.0.14.4 or 32.0.2 or 33.0.1 | |
| Title | Nextcloud: Files Lock app allows users to lock and unlock files of other users | |
| Weaknesses | CWE-287 | |
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-06-01T16:53:50.656Z
Updated: 2026-06-01T21:42:51.254Z
Reserved: 2026-05-11T18:41:13.158Z
Link: CVE-2026-45283
Updated: 2026-06-01T21:41:54.940Z
Status : Analyzed
Published: 2026-06-01T19:16:50.523
Modified: 2026-06-03T17:02:29.153
Link: CVE-2026-45283
No data.