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CVE-2026-45283

6.3 MEDIUM

Nextcloud is an open source content collaboration platform

Published: 2026-06-01 · Last updated: 2026-06-03

Severity and scoring

CVSS
6.3 MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE
CWE-287

Affected products

VendorProduct
nextcloudnextcloud_server

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

Source: NVD

References

Related CVEs

Same vendor

  • CVE-2026-45810 — Nextcloud is an open source content collaboration platform (6.8 MEDIUM)
  • CVE-2026-45722 — Nextcloud is an open source content collaboration platform (7.1 HIGH)
  • CVE-2026-45691 — Nextcloud is an open source content collaboration platform (5.9 MEDIUM)
  • CVE-2026-45690 — Nextcloud is an open source content collaboration platform (5.9 MEDIUM)
  • CVE-2026-45545 — Nextcloud is an open source content collaboration platform (8.2 HIGH)

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