CVE-2026-45283

Katalog CVE

CVSS 4.3 · Medium EPSS 0,36%

Kerentanan Improper Authentication pada nextcloud server. Skor CVSS 3.1 4.3 (Medium) menurut NVD.

Deskripsi (NVD)

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

Rincian

Terbit di NVD

1 Juni 2026

Terakhir diubah

22 Juli 2026

Status NVD

Analyzed

CVSS 3.1

4.3 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-287: Improper Authentication

EPSS (30 hari)

0,36% peluang dieksploitasi; lebih tinggi dari 28,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4chh-6mhf-p4jj advisory vendor
• https://github.com/nextcloud/files_lock/pull/1007 issue tracking · patch
• https://hackerone.com/reports/3301553# permissions required