CVE-2021-3199 is a critical directory traversal vulnerability affecting ONLYOFFICE Document Server versions prior to 5.6.3. When JSON Web Tokens (JWT) are enabled, an unauthenticated attacker can achieve remote code execution by manipulating image upload parameters with a "../" sequence. This vulnerability carries a CVSS score of 9.8, indicating a severe risk with high impact on confidentiality, integrity, and availability, and can be exploited remotely with low attack complexity. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the high FAUCET Risk Score suggests its potential for significant compromise.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.6.3CPE matchmatch criteria | cpe:2.3:a:onlyoffice:document_server:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.