CVEvulnerability

CVE-2021-22915

9.8 CRITICAL Published 2021-06-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-06-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:P/I:N/A:N
Weaknesses
CWE-307

Description

Nextcloud server before 19.0.11, 20.0.10, 21.0.2 is vulnerable to brute force attacks due to lack of inclusion of IPv6 subnets in rate-limiting considerations. This could potentially result in an attacker bypassing rate-limit controls such as the Nextcloud brute-force protection.

Affected configurations

• nextcloud nextcloud server (< 19.0.11) • nextcloud nextcloud server (>= 20.0.0 < 20.0.10) • nextcloud nextcloud server (>= 21.0.0 < 21.0.2) • fedoraproject fedora 33 • fedoraproject fedora 34

Related

Weakness · CWE (1)

  • CWE-307 Improper Restriction of Excessive Authentication Attempts weakness

References