VULNERABILITY INTELLIGENCE

CVE-2021-22915

CVSS score9.8 CRITICAL
EPSS probability1.74%
CISA KEVNot currently listed
Published2021-06-11
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • support@hackerone.com: CWE-307
  • nvd@nist.gov: CWE-307

Primary references