CVEvulnerability

CVE-2026-45283

4.3 MEDIUM Published 2026-06-01 Modified 2026-07-22 Official page ↗
Status
Analyzed
Published
2026-06-01
Last modified
2026-07-22
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS 3.1 ([email protected])
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-287

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

Affected configurations

• nextcloud nextcloud server (>= 32.0.0 < 32.0.2) • nextcloud nextcloud server (>= 33.0.0 < 33.0.1) • nextcloud nextcloud server (>= 31.0.0 < 31.0.14.4)

Related

Weakness · CWE (1)

  • CWE-287 Improper Authentication weakness

References