CVE-2021-41177
8.1 HIGHNextcloud is an open-source, self-hosted productivity platform
Published: 2021-10-25 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 8.1 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- CWE
- CWE-799
Affected products
| Vendor | Product |
|---|---|
| nextcloud | nextcloud_server |
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`.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-41177
- [Other]https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fj39-4qx4-m3f2
- [Patch]https://github.com/nextcloud/server/pull/28728
- [Other]https://hackerone.com/reports/1265709
- [Other]https://security.gentoo.org/glsa/202208-17
- [Other]https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fj39-4qx4-m3f2
- [Patch]https://github.com/nextcloud/server/pull/28728
- [Other]https://hackerone.com/reports/1265709
- [Other]https://security.gentoo.org/glsa/202208-17
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