CVE-2021-41177 is a high-severity vulnerability affecting Nextcloud Server versions prior to 20.0.13, 21.0.5, and 22.2.0. The vulnerability stems from the lack of a database backend for rate-limiting, which, in default installations without a configured memory cache, allowed attackers to bypass rate limits on features like two-factor authentication codes. With a CVSS score of 8.1, this flaw presents a low-complexity network attack vector that could lead to high impact on confidentiality and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 20.0.13CPE matchmatch criteria | cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* | ||
>= 21.0.0, < 21.0.5CPE matchmatch criteria | cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* | ||
>= 22.0.0, < 22.2.0CPE matchmatch criteria | cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.