CVEvulnerability

CVE-2021-41177

8.1 HIGH Published 2021-10-25 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-10-25
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVSS 2.0 ([email protected])
5.5 MEDIUM — AV:N/AC:L/Au:S/C:P/I:N/A:P
Weaknesses
CWE-799

Description

Nextcloud is an open-source, self-hosted productivity platform. Prior to versions 20.0.13, 21.0.5, and 22.2.0, Nextcloud Server did not implement a database backend for rate-limiting purposes. Any component of Nextcloud using rate-limits (as as `AnonRateThrottle` or `UserRateThrottle`) was thus not rate limited on instances not having a memory cache backend configured. In the case of a default installation, this would notably include the rate-limits on the two factor codes. It is recommended that the Nextcloud Server be upgraded to 20.0.13, 21.0.5, or 22.2.0. As a workaround, enable a memory cache backend in `config.php`.

Affected configurations

• nextcloud nextcloud server (< 20.0.13) • nextcloud nextcloud server (>= 21.0.0 < 21.0.5) • nextcloud nextcloud server (>= 22.0.0 < 22.2.0)

Related

Weakness · CWE (1)

  • CWE-799 Improper Control of Interaction Frequency weakness

References