CVE-2021-37628 is a high-severity vulnerability affecting Nextcloud Richdocuments, an open-source collaborative office suite. This flaw allows an attacker to bypass the "Upload Only" public link share feature, enabling unauthorized reading of arbitrary files within such shares. The vulnerability has a CVSS score of 7.5 (High) due to its network-based attack vector, low complexity, and high impact on confidentiality. While no public exploits, Metasploit modules, or Nuclei templates are currently available, and there is no evidence of active exploitation or significant community discussion, immediate patching to Richdocuments versions 3.8.4 or 4.2.1 is recommended, or disabling the application if upgrading is not feasible.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.8.4CPE matchmatch criteria | cpe:2.3:a:nextcloud:richdocuments:*:*:*:*:*:*:*:* | ||
>= 4.0.0, < 4.2.1CPE matchmatch criteria | cpe:2.3:a:nextcloud:richdocuments:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.